also: はやがってん
noun, noun or participle which takes 'suru', transitive verb, intransitive verb
jumping to a hasty conclusion; misunderstanding through assumption
Used when someone assumes they understand something without proper confirmation, often leading to mistakes. Can be used as a noun or with する to describe the act of jumping to conclusions.
彼は話を最後まで聞かずに早合点して、間違った返事をした。
He jumped to a hasty conclusion without listening to the whole story and gave the wrong reply.
早合点は禁物だ。ちゃんと確認しよう。
Jumping to conclusions is a bad idea. Let's check properly.