stupid /ˈstjuːpɪd/ adjective
SILLY › silly or not intelligent: That was a really stupid thing to do. How could you be so stupid?
ANNOYING [always before noun] informal › used to show that you are annoyed about something which is causing a problem: I can never get this stupid machine to work! stupidity /stjuːˈpɪdəti/ noun [U] stupidly adverb