stupid or foolish

मूर्ख या बेवकूफ

English Usage: His blockheaded decisions often led to trouble.

Hindi Usage: उसके मूर्ख निर्णय अक्सर समस्या में बदल जाते थे.

a stupid person

एक मूर्ख व्यक्ति

English Usage: Don't be such a blockhead; think before you act.

Hindi Usage: ऐसा मूर्ख मत बनो; पहले सोचो, फिर कार्य करो.