早合点の早忘れ。

tbd

Soon learnt, soon forgotten.

早合点しないで。

tbd

Don't jump to conclusions.

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。

tbd

I was too hasty in concluding that he was lying.

あわてものだから彼はたぶん早合点するだろう。

tbd

Being a hasty person, he is likely to jump to conclusions.

私がやったのだと彼は早合点した。

tbd

He jumped to the conclusion that I had done it.

He ran away with the idea that I had done it.