either

US /ˈiðɚ, ˈaɪðɚ/

UK /ˈaɪðə(r)/

A1

adjective

  • One of two (used when there is a choice of two)
  • Used to refer to one or the other of two things, people, etc.

other

  • Used to express agreement with a negative statement.

adverb

  • Used to indicate that something is true of one thing and also of another.
  • Used after a negative statement to indicate that the preceding statement applies equally to what follows.
  • (After negative statements) likewise, in addition

conjunction

  • Used as the first of two connected things
  • Used before the first of two or more alternatives (the other being introduced by 'or').
  • Used before the first of two (or occasionally more) alternatives, the second being introduced by 'or'.

determiner

  • One of the two; this one or that one.
  • Used as the first of two connected things

pronoun

  • One or the other of two people or things.
  • The one or the other