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  • Welcome to the oxford 3000 essential words program. Now, let's start learning English!

  • Section 15: Words Starting with O. obey o . b . e . y . obey. obey means be obedient

  • to. If you don't obey the rules, you will be asked to leave.

  • object o . b . j . e . c . t . object. object means a tangible and visible entity; an entity

  • that can cast a shadow. It was full of rackets, balls and other objects

  • objective o . b . j . e . c . t . i . v . e . objective. objective means the goal intended

  • to be attained (and which is believed to be attainable). The sole objective of her trip

  • was to see her children. observation o . b . s . e . r . v . a . t

  • . i . o . n . observation. observation means the act of making and recording a measurement.

  • She is under close observation at the hospital, but seems to be recovering.

  • observe o . b . s . e . r . v . e . observe. observe means discover or determine the existence,

  • presence, or fact of. We observed traces of lead in the paint.

  • obtain o . b . t . a . i . n . obtain. obtain means come into possession of. How did you

  • obtain the visa? obvious o . b . v . i . o . u . s . obvious.

  • obvious means easily perceived by the senses or grasped by the mind. The obvious thing

  • to do if you're feeling sick is to go to bed. obviously o . b . v . i . o . u . s . l . y

  • . obviously. obviously means that a fact can easily be noticed or understood. The answer

  • is obviously wrong. occasion o . c . c . a . s . i . o . n . occasion.

  • occasion means an event that occurs at a critical time. It was needed only on special occasions.

  • occasionally o . c . c . a . s . i . o . n . a . l . l . y . occasionally. occasionally

  • means now and then or here and there. He was arrogant and occasionally callous.

  • occupy o . c . c . u . p . y . occupy. occupy means be present in; be inside of. Your children

  • need to find something to occupy your time instead of sitting around watching television

  • all day. occupied o . c . c . u . p . i . e . d . occupied.

  • occupied means held or filled or in use. She keeps her time well occupied.

  • occur o . c . c . u . r . occur. occur means come to pass. Nothing occurred that seemed

  • important. ocean o . c . e . a . n . ocean. ocean means

  • a large body of water constituting a principal part of the hydrosphere. They are affected

  • by cold ocean currents that parallel the coast. o'clock o . ' . c . l . o . c . k . o'clock.

  • o'clock means according to the clock. It's three o'clock in Tokyo now.

  • October O . c . t . o . b . e . r . October. October means the month following September

  • and preceding November. In October 1995, the potato became the first vegetable to be grown

  • in space. odd o . d . d . odd. odd means not easily

  • explained. It is odd that his name is never mentioned.

  • oddly o . d . d . l . y . oddly. oddly means in a manner differing from the usual or expected.

  • He's behaving rather oddly. of o . f . of. of is used to show what a part

  • belongs to or comes from. The last scene of the movie.

  • off o . f . f . off. off means from a particular thing or place or position. They drove off.

  • offend o . f . f . e . n . d . offend. offend means act in disregard of laws, rules, contracts,

  • or promises. Offend all laws of humanity. offense o . f . f . e . n . s . e . offense.

  • offense means a lack of politeness; a failure to show regard for others; wounding the feelings

  • or others. He took offense at my question. offensive o . f . f . e . n . s . i . v . e

  • . offensive. offensive means violating or tending to violate or offend against. Considered

  • such depravity offensive against all laws of humanity.

  • offer o . f . f . e . r . offer. offer means make available or accessible, provide or furnish.

  • The conference center offers a health spa. office o . f . f . i . c . e . office. office

  • means place of business where professional or clerical duties are performed. He rented

  • an office in the new building. officer o . f . f . i . c . e . r . officer.

  • officer means any person in the armed services who holds a position of authority or command.

  • An officer is responsible for the lives of his men.

  • official o . f . f . i . c . i . a . l . official. official means having official authority or

  • sanction. An official representative. officially o . f . f . i . c . i . a . l . l

  • . y . officially. officially means in an official role. Officially, he is in charge.

  • often o . f . t . e . n . often. often means many times at short intervals. We often met

  • over a cup of coffee. oh o . h . oh. oh is used to introduce a response

  • or a comment on something that has just been said. You don't understand! Oh, I think I

  • do, Grace. oil o . i . l . oil. oil means a slippery

  • or viscous liquid or liquefiable substance not miscible with water. They are boring the

  • ground for oil. OK O . K . OK. OK means an expression of agreement

  • normally occurring at the beginning of a sentence. It's OK as long as it doesn't get windy.

  • old o . l . d . old. old means having lived for a relatively long time or attained a specific

  • age. The old woman sighed wearily as she sat down on the bus.

  • old-fashioned. old-fashioned. old-fashioned means out of fashion. A suit of rather old-fashioned

  • appearance. on o . n . on. on means in or into a position

  • covering, touching or forming part of a surface. There's a mark on your skirt.

  • once o . n . c . e . once. once means on one occasion. Once I ran into her.

  • one o . n . e . one. one means the smallest whole number or a numeral representing this

  • number. He has the one but will need a two and three to go with it.

  • one another one another. one anothermeanseach other. They often stay at one another's houses.

  • other o . t . h . e . r . other. other means not the same one or ones already mentioned

  • or implied. He asked for other employment. onion o . n . i . o . n . onion. onion means

  • edible bulb of an onion plant. A sliced raw onion helps relieve the pain of a bee sting.

  • online o . n . l . i . n . e . online. online means controlled by or connected to a computer

  • or to the Internet. An online ticket booking system.

  • only o . n . l . y . only. only means being the only one; single and isolated from others.

  • She is not only beautiful but also amiable. onto o . n . t . o . onto. onto means movement

  • on or to a particular place or position. You will have to merge quickly when we get onto

  • the highway. open o . p . e . n . open. open means affording

  • unobstructed entrance and exit; not shut or closed. They left the door open.

  • openly o . p . e . n . l . y . openly. openly means in an open way. He openly flaunted his

  • affection for his sister. opening o . p . e . n . i . n . g . opening.

  • opening means an open or empty space in or between things. There was a small opening

  • between the trees. operate o . p . e . r . a . t . e . operate.

  • operate means direct or control; projects, businesses, etc. Do you know how to operate a

  • variety of modern office machines? operation o . p . e . r . a . t . i . o . n

  • . operation. operation means a planned activity involving many people performing various actions.

  • They organized a rescue operation. opinion o . p . i . n . i . o . n . opinion.

  • opinion means a personal belief or judgment that is not founded on proof or certainty.

  • My opinion differs from yours. opponent o . p . p . o . n . e . n . t . opponent.

  • opponent means a contestant that you are matched against. Even his political opponents describe

  • him as an honorable man. opportunity o . p . p . o . r . t . u . n

  • . i . t . y . opportunity. opportunity means a possibility due to a favorable combination

  • of circumstances. The holiday gave us the opportunity to visit Washington.

  • oppose o . p . p . o . s . e . oppose. oppose means be against; express opposition to. We

  • oppose the ban on abortion. opposing o . p . p . o . s . i . n . g . opposing.

  • opposing means characterized by active hostility. He was injured by a vicious kick from an opposing player.

  • opposed o . p . p . o . s . e . d . opposed. opposed means being in opposition or having

  • an opponent. Most of us are opposed to the death penalty.

  • opposite o . p . p . o . s . i . t . e . opposite. opposite means being directly across from

  • each other; facing. This state of the body, which is opposite to the former, Dr.

  • opposition o . p . p . o . s . i . t . i . o . n . opposition. opposition means the action

  • of opposing something that you disapprove or disagree with. He encountered a general

  • feeling of resistance from many citizensdespite opposition from the newspapers he went ahead

  • option o . p . t . i . o . n . option. option means one of a number of things from which

  • only one can be chosen. What option did I have?

  • or o . r . or. or means use or to link two or more alternatives. He said he would try

  • to write or call as soon as he reached the Canary Islands.

  • orange o . r . a . n . g . e . orange. orange means round yellow to orange fruit of any

  • of several citrus trees. Orange juice made from concentrate tastes quite different from

  • fresh-squeezed orange juice. order o . r . d . e . r . order. order means

  • a command given by a superior (a military or law enforcement officer) that must be obeyed.

  • The British ships dropped anchor and waited for orders from London.

  • in order to. in order to. in order to means marked by system; in good order. A teacher

  • needs to have good communication skills in order to do her job well.

  • ordinary o . r . d . i . n . a . r . y . ordinary. ordinary means not exceptional in any way

  • especially in quality or ability or size or degree. The office ordinarily gets very

  • busy around 3:00. organ o . r . g . a . n . organ. organ means

  • a fully differentiated structural and functional unit in an animal that is specialized for

  • some particular function. Penguins have an organ above their eyes that converts seawater

  • to fresh water. organization o . r . g . a . n . i . z . a

  • . t . i . o . n . organization. organization means an organized structure for arranging

  • or classifying. The facts were familiar but it was in the organization of them that he

  • was original. organize o . r . g . a . n . i . z . e . organize.

  • organize means cause to be structured or ordered or operating according to some principle or

  • idea. We'd better get organized or we'll never finish in time.

  • organized o . r . g . a . n . i . z . e . d . organized. organized means methodical and

  • efficient in arrangement or function. His life was almost too organized.

  • origin o . r . i . g . i . n . origin. origin means the place where something begins, where

  • it springs into being. Jupiter was the origin of the radiation.

  • original o . r . i . g . i . n . a . l . original. original means preceding all others in time

  • or being as first made or performed. The original inhabitants of the Americas.

  • originally o . r . i . g . i . n . a . l . l . y . originally. originally means in an original

  • manner. The dress originally cost $75, but with my discount it only cost me $55.

  • other o . t . h . e . r . other. other means not the same one or ones already mentioned

  • or implied. He asked for other employment. otherwise o . t . h . e . r . w . i . s . e

  • . otherwise. otherwise means in other respects or ways. The funds are not otherwise available.

  • ought too. ought to. ought to means is a phrasal modal verb. It means that it is morally right

  • to do a particular thing or that it is morally right for a particular situation to exist,

  • especially when giving or asking for advice or opinions.

  • He ought to have come by now." ounce o . u . n . c . e . ounce. ounce means

  • a unit of apothecary weight equal to 480 grains or one twelfth of a pound. The price of gold

  • fluctuated between $375 and $427 an ounce in the first six months of 2004.

  • our o . u . r . our. our means belonging to or connected with us. Our next trip is for

  • pleasure, not for work. ours o . u . r . s . ours. ours means the

  • one or ones that belong to us. We often hear it said that ours is essentially a tragic

  • age. ourselves o . u . r . s . e . l . v . e . s

  • . ourselves. ourselves means the reflexive form of we; used when you and another person

  • or other people together cause and are affected by an action. I guess we have to decide for

  • ourselves what really happened. out o . u . t . out. out means not allowed

  • to continue to bat or run. He was tagged out at second on a close play.

  • outdoors o . u . t . d . o . o . r . s . outdoors. outdoors means outside a building. The ceremony

  • was being held outdoors. outdoor o . u . t . d . o . o . r . outdoor.

  • outdoor means located, suited for, or taking place in the open air. A beautiful outdoor

  • setting for the wedding. outer o . u . t . e . r . outer. outer means

  • being on the outside or further from a center. Spent hours adorning the outer man.

  • outline o . u . t . l . i . n . e . outline. outline means describe roughly or briefly

  • or give the main points or summary of. Sketch the outline of the book.

  • output o . u . t . p . u . t . output. output means final product; the things produced.

  • Output was up in the second quarter. outside o . u . t . s . i . d . e . outside.

  • outside means relating to or being on or near the outer side or limit. The bidettoilet itself

  • has not spread much outside of Japan. outstanding o . u . t . s . t . a . n . d

  • . i . n . g . outstanding. outstanding means distinguished from others in excellence. Did

  • outstanding work in human relations. oven o . v . e . n . oven. oven means kitchen

  • appliance used for baking or roasting. She baked bread and cakes in the oven.

  • over o . v . e . r . over. over means having come or been brought to a conclusion. The

  • affair is over, ended, finished. overall o . v . e . r . a . l . l . overall.

  • overall means involving only main features. The overall pattern of his life.

  • overseas o . v . e . r . s . e . a . s . overseas. overseas means beyond or across the sea. In

  • a place across an ocean. He lived overseas for many years.

  • overcome o . v . e . r . c . o . m . e . overcome. overcome means win a victory over. You must

  • overcome all difficulties. owe o . w . e . owe. owe means be obliged

  • to pay or repay. She owes me $200. own o . w . n . own. own means belonging to

  • or on behalf of a specified person (especially yourself); preceded by a possessive. She makes

  • her own clothes. owner o . w . n . e . r . owner. owner means

  • someone who owns (is legal possessor of) a business. He is the owner of a chain of restaurants.

  • Thanks for watching! This is all for section 15: Words starting with O. You can move on

  • to section 16 : Words starting with P. We'll see you next time. Goodbye!

Welcome to PnT English channel. A learning English vocabulary with videos channel.

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B1 INT US organized opposition offend opposing oppose ounce

English Vocabulary Words With Meaning: the Oxford 3000: Words Starting With O - Free English Lesson

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    Phan Tran   posted on 2017/07/07
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