What is the opposite of the word "why" ?

Answer 1

Depends on how you're using the word.

"I don't know why he said that" may = "I don't know the CAUSE of his saying that".
opposite = 'effect', or 'result'

"For every 'why', there is an answer."
"(the) why" here = 'question'
opposite = 'answer' or 'reason OR '(the) because'

"why" as an interjection of anger or surprise, e.g.,
"Why, how dare you!"
"Why, I never looked at it that way before!"
opposite = 'who cares', 'it doesn't matter', 'no big deal'

or, if you are simply using it to ask a question - "Why?"
the opposite would be "why not?"

Answer 2

there are many types of opposites... according to wiki:
Antonyms, from the Greek anti ("opposite") and onoma ("name") are word pairs that are opposite in meaning, such as hot and cold, obese and skinny, and up and down. Words may have different antonyms, depending on the meaning. Both long and tall are antonyms of short. Antonyms are of four types:
Gradable antonyms are two ends of the spectrum (slow and fast) but can have variations.
Complementary antonyms are pairs that express absolute opposites, like mortal and immortal.
Relational antonyms are pairs in which one describes a relationship between two objects and the other describes the same relationship when the two objects are reversed, such as parent and child, teacher and student, or buy and sell.
Auto-antonyms are the same words that can mean the opposite of themselves under different contexts or having separate definitions
enjoin (to prohibit, issue injunction; to order, command)
fast (moving quickly; fixed firmly in place)
cleave (to split; to adhere)
sanction (punishment, prohibition ; permission)
stay (remain in a specific place, postpone; guide direction, movement)

so, i'd say one option is "why not"

Answer 3

The word "why" is one that inquires as to the way in which something works or a reason behind something and requires an explanation. Therefore, the opposite to "why" is an explanation.

Example:
I am going to turn on the lights.
Why?
Because I cannot see without them.

Or...

if you're immature you can just say "chicken thigh"...

Answer 4

Why not? (Not every word has an opposite).
.

Answer 5

not all words have exact opposites -
others are clear cut: positive/negative, up/down.
what is the opposite of peanut? not peanut?
why falls into that gray area so i'll fall back on my peanut answer : "not why" is my answer

Answer 6

"Why" questions are usually answered with "because" or "so (that)."

Why did you close the door? Because I don't want burlars to enter.

Why are you going to pay the bills? So that the store does not charge us interest.

Bobby Kennedy said that some people ask "Why?," but he thought we should ask "Why not?" Jimmy Carter's 1975 autobiography was entitled, "Why not the best?"

Answer 7

The opposite of "why" is "because".

Answer 8

yes

Answer 9

Because

Why? Because you answer a why question with because.

Answer 10

understand