noun
hasty conclusion; rash judgment
A somewhat formal or literary term for jumping to a conclusion without proper evidence or consideration. Often used in critical or cautionary contexts.
彼の意見は盲断に過ぎない。
His opinion is nothing more than a hasty conclusion.
盲断を避けるため、もっと情報を集めるべきだ。
To avoid rash judgments, we should gather more information.
Compound of 盲 (もう, 'blind') and 断 (だん, 'judgment' or 'decision'), literally meaning 'blind judgment'. The exact historical derivation is uncertain, but the word is conventionally associated with the idea of making a decision without seeing the full picture.