colloquial expression of refusal or strong dislike (contracted form of 'iya da'): 'no way', 'I don't want to'.
やだ、今日のデートは雨で行きたくない。
No way — I don't want to go on today's date because it's raining.
宿題を全部やるの？ やだよ、まだ疲れてるし。
Do I have to do all the homework? No way — I'm still tired.
明日早起き？ やだ、もっと寝たい。
Get up early tomorrow? No way — I want to sleep more.
やだ、それは本当に無理だよ。
No way — that's really impossible for me.
an interjection expressing disgust or dismay: 'oh no', 'yuck', 'eww'.
えっ、カエル？ やだ、触りたくない。
A frog? Eww, I don't want to touch it.
やだ、そんな冗談はやめてよ。
Oh no — stop that kind of joke.
湿気が多いと服がべたべたしてやだね。
It's disgusting when it's humid and your clothes feel sticky, isn't it?