tightass

English - English

Definition of tightass in English English dictionary

Someone who does not know how to have fun, or who is so worried about insignificant things as to ruin any fun that anyone around them may be having

(Slang, chiefly US) An inhibited or excessively self-controlled person

(mildly vulgar) One who has not figured out how to have fun. Someone who is so worried about little insignificant things as to ruin any fun that anyone around them may be having

Etymology

() tight +‎ ass