why

/wai/
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why

A child asks why the sky is blue.

Definition
  1. Adverb:

    • For what reason or purpose: Used to ask about the cause, reason, or purpose of something.
    • On account of which: Used to introduce a relative clause explaining a reason.
  2. Noun:

    • A reason or explanation: The cause or intention underlying an action or situation.
  3. Interjection:

    • Used to express surprise, hesitation, approval, disagreement, or to introduce a new thought: An exclamation to convey various reactions or to fill a pause.
Examples of Usage
  • Adverb:

    • Why are you leaving so early?
    • I don't understand why he made that decision.
    • That is the reason why I called you.
  • Noun:

    • She explained the whys of the new policy to the team.
    • He always questions the whys behind the rules.
  • Interjection:

    • Why, I didn't expect to see you here!
    • Why, yes, of course you can borrow it.
    • Why, that's the best idea I've heard all day!
Advanced Usage
  • "Why ever...": An emphatic form of "why," used to express great surprise or to intensify a question.

    • Why ever would you say such a thing?
  • "Why, oh why...": A rhetorical, often lamenting, repetition for emphasis.

    • Why, oh why, did I agree to this?
  • "Why not?": Used to make or agree to a suggestion.

    • "I'm thinking of going for a walk." – "Why not? It's a lovely day."
Variants and Related Words
  • The whys and (the) wherefores (idiomatic noun phrase): The full reasons or explanations.

    • She demanded to know the whys and wherefores of the decision.
  • Why-so (archaic noun, rare): A reason or explanation.

Synonyms
  • Adverb: For what reason, Wherefore (archaic), How come (informal).
  • Noun: Reason, Cause, Motive, Rationale.
  • Interjection: Well, My, Oh.
Related Phrases
  • Why on earth...: Used for added emphasis when asking a question, often showing frustration or disbelief.

    • Why on earth did you do that?
  • That's why: Used to introduce the result or consequence of a previously stated reason.

    • I was tired; that's why I went home early.
Related Idioms
  • Every why has a wherefore: (Proverb) Every action or event has a reason or explanation behind it.

  • Why in the world...: Similar to "why on earth," used for strong emphasis in a question.

    • Why in the world would you need ten copies?
why

A child asks why the sky is blue.

Noun
  1. the cause or intention underlying an action or situation, especially in the phrase `the whys and wherefores'