why is on the Basic English 850 List.
who - why - wide
why is one of the 1000 most common headwords.
whole - why - wide

Pronunciation change

Homophones change

in accents with the wine-whine merger

Adverb change

Positive
why

Comparative
none

Superlative
none

  1. (question) Used to ask the reason for something.
    Why did you say that?
    Why did you try to steal money from this shop?
  2. (question) Used to talk about the reason for something.
    I wonder why he did that.
  3. (relative) Used to give more information about the reason for something.
    Can you tell me the reason why he did that?

Interjection change

Interjection
why

  1. Used to show a person's surprise or impatience about something.
    Why! Thank you for the present.

Noun change

Singular
why

Plural
whys or whies

  1. (plural: whys) The reason to something.
    Whenever you begin to write an essay, please do not forget to talk about the who, the what, the when, the where, the why and the how.
  2. (plural: whies) (UK) A why is a young cow or woman.