Jumping to a hasty conclusion — making a quick judgment without sufficient verification, often leading to misunderstanding. Colloquially similar to 早とちり.
メールを見てすぐに怒るのは早合点だと気づいた。
I realized that getting angry immediately after reading the email was jumping to a conclusion.
彼女の言葉を聞いて早合点してしまい、謝ることになった。
I jumped to a hasty conclusion after hearing her words and ended up apologizing.
会議では事実を確認してから結論を出すように、早合点は避けてください。
In meetings, please avoid hasty conclusions and draw conclusions only after verifying the facts.