stupid
/ˈstuːpəd/ /Brit ˈstjuːpəd/
adjective
stupider; -est
[also more ~; most ~]
not intelligent :having or showing a lack of ability to learn and understand things
not sensible or logical :foolish
not able to think normally because you are drunk, tired, etc.
informal - used to refer to something in an angry or irritated way
US