B1US#blunt#consequence#sustain#authentic#strain#typicalIf You Know These 15 Words, Your English is EXCELLENT!00VoiceTube posted on 2024/09/18More optionsShareSaveReportVideo vocabularyNo vocabulary matches your filtersauthenticUS /ɔˈθɛntɪk/・UK /ɔ:ˈθentɪk/AdjectiveFrom a reliable source; accurate; trueB1More toughUS /tʌf/・UK /tʌf/Adjective(Of food) difficult to chew or bite throughVery difficult to do or deal withNounA rough and aggressive person.A2More slightlyUS /ˈslaɪtli/・UK /ˈslaɪtli/AdverbOnly a littleB1More effortUS /ˈɛfət/・UK /ˈefət/Uncountable NounAmount of work used trying to do somethingA conscious exertion of power; a try.A2TOEICMore Use EnergyUnlock All VocabularyUnlock pronunciation, explanations, and filtersUnlock