He made a tomfool mistake by signing the contract without reading it.
চুক্তিপত্রটি না পড়েই স্বাক্ষর করে সে এক বোকাসুলভ ভুল করেছে।
COLLOCATIONS
tomfool behavior, a complete tomfool, tomfool mistake
WORD FORMSPlural: tomfoolsUSAGE NOTES
The term is somewhat dated and informal. It is often used to describe someone who is not just unintelligent, but actively behaving in a silly or clownish manner.