Synonyms of simpleminded

1 Syllable

slow, dumb

2 Syllables

naive, silly, sillier, stupid, doltish, oafish, gawkish, crude, clueless, brainless, silliest

3 Syllables

stupidest, unstudied, thickskulled, dimwitted, ignorant, blockheaded, childlike, unschooled, idiotic, unworldly, blunderous, lubberly, moronic, thick-headed

4 Syllables

loggerheaded, muddleheaded, untutored, feeble-minded

5 Syllables

unintelligent, uncomplicated, butterfingered