interjection
no way!; not a chance!; I don't want to!
Colloquial, emphatic refusal or rejection. Derived from 嫌なことだ (iya na koto da), meaning 'it's an unpleasant thing'. Used in casual speech to strongly decline something or express unwillingness.
See also: 嫌 (や)
「明日、引っ越し手伝ってよ」「やなこった!」
"Help me move tomorrow." "No way!"
こんなまずい料理、やなこった。
I don't want to eat such bad food. No chance!