Open English Wordnet
Nouns
Adjectives
(a)stupidlacking or marked by lack of intellectual acuity (s)dazed, stunned, stupefied, stupidin a state of mental numbness especially as resulting from shock“he had a dazed expression on his face”,
“lay semiconscious, stunned (or stupefied) by the blow”,
“was stupid from fatigue” (a)unintelligent, stupidlacking intelligence“a dull job with lazy and unintelligent co-workers”