| Main Entry: | idiot |
| Part of Speech: | noun |
| Definition: | very stupid person |
| Synonyms: | blockhead, bonehead, cretin, dimwit, dork, dumbbell, dunce, fool, ignoramus, imbecile, jerk, kook, moron, muttonhead, nincompoop, ninny, nitwit, out to lunch, pinhead, simpleton, stupid, tomfool, twit |
| Notes: | an idiot is a stupid person with a mental age below three years, while a moron is a stupid person with a mental age of between seven to twelve years |
| Antonyms: | brain |
| Main Entry: | imbecile |
| Part of Speech: | noun |
| Definition: | very stupid person |
| Synonyms: | birdbrain, dimwit, dolt, dummy, dunce, fool, idiot, jerk, lamebrain, moron, pinhead, simpleton |
| Antonyms: | brain |
| Main Entry: | nitwit |
| Part of Speech: | noun |
| Definition: | idiot |
| Synonyms: | blockhead, bonehead, cretin, dimwit, dork, dumbbell, dummy, dunce, fool, halfwit, ignoramus, imbecile, jerk, moron, nincompoop, ninny, numskull, pinhead, simpleton, stupid person |
| Main Entry: | numskull |
| Part of Speech: | noun |
| Definition: | idiot |
| Synonyms: | blockhead, bonehead, buffoon, cretin, dimwit, dolt, dork, dumbbell, dummy, dunce, fathead, fool, halfwit, ignoramus, imbecile, jerk, moron, nincompoop, ninny, nitwit, pinhead, simpleton, stupid person |
| Main Entry: | retarded |
| Part of Speech: | adjective |
| Definition: | limited |
| Synonyms: | backward, birdbrained, defective, dim, dim-witted, dopey, dull, dumbbell, dumbo, dumdum, dummy, exceptional, feeble-minded, gorked, half-witted, held back, imbecile, lamebrained, mentally defective, moronic, numbskull, opaque, pinhead, retardo, sappy, simple, simple-minded, slow, slow-witted, stupid, subnormal, touched, underachieving, weak, yo-yo |