either

US /ˈiðɚ, ˈaɪðɚ/

UK /ˈaɪðə(r)/

A1

adjective

  • One of two (used when there is a choice of two)

adverb

  • Used to indicate that something is true of one thing and also of another.
  • Used after a negative statement to indicate that the previous statement is also true for someone or something else.
  • (After negative statements) likewise, in addition

conjunction

  • Used to indicate a choice between two possibilities.
  • Used as the first of two connected things
  • Used to introduce two possibilities or choices.

determiner

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

pronoun

  • The one or the other