決め付ける

きめつける

to fix upon (one-sidedly); to (ignore someone's position and) arbitrarily decide something is the case; to scold; to take (a person) to task

common word Also written 決めつける

Meaning

v1vt
to fix upon (one-sidedly); to (ignore someone's position and) arbitrarily decide something is the case
v1vt
to scold; to take (a person) to task

Example sentences

そういうの、先入観っていうんだよっ！体験したこと無いのに、決め付けるのはよくないっ！

That's what they call 'prejudice'! It's wrong to make your mind up on something you've never experienced!
彼は人種差別を悪だと決めつけた。

He condemned racial discrimination as evil.
私は早合点して彼がうそをついているのだと決めつけてしまった。

I was too hasty in concluding that he was lying.