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either

A1
Very common

Pronunciation

UK

  • /ˈaɪðə/

US

  • /ˈaɪðər/

Meanings

Determiner

  1. one or the other of two people or things

  2. each of two people or things

Pronoun

  1. one or the other of two people or things already mentioned

Conjunction

  1. used with or to introduce alternatives

Adverb

  1. also, used after a negative statement

Beyond the definition

"Either" introduces a choice between two possibilities. It's like reaching a fork in the road: you can go left, or you can go right. You might say, "You can have your tea either hot or cold," meaning you may choose one of the two.

"Either" is usually about picking one; it suggests that one thing will happen, even if you do not know which one yet. It often pairs with "or." If someone asks, "Are you coming to the party?" and you reply, "I'll come either tonight or tomorrow," you are leaving your options open. Be careful, though: sometimes it means "each of two." If there are trees on either side of a road, there are trees on both sides.

Examples

  1. 1

    Flexible choice

    Either answer is fine.

  2. 2

    Roadside location

    There were tall trees on either side of the road.

    • Phraseon either side of

      on both sides

  3. 3

    Choosing plans

    Either of these plans could work.

    • Grammar

      either of is used before a plural group

  4. 4

    Family pickup

    Either my sister or my dad can pick you up from the airport.

    • Patterneither ... or ...

      a choice between two possibilities

More examples
  1. 5

    Timing choice

    We can either eat now or wait until after the movie.

  2. 6

    Planning flexibility

    If Tuesday is difficult, we can meet on Wednesday instead; either way, I can make it.

    • Phraseeither way

      in both possible situations

  3. 7

    Negative addition

    I don't drink coffee, and I don't drink tea either.

    • Grammar

      at the end of a negative sentence, either means "also not"

  4. 8

    Shared negative

    "I can't stay late." "I can't either."

See also

Similar

  • one or the other
  • one of two

Shades of meaning

Contrast

Used with (collocations)

  • either one
  • either option
  • either way

Explore

Forms and spellings

1 form open this card.

Main spelling

  • eitheradverb