Simpleminded

Antonyms of SIMPLEMINDED

realistic, down-to-earth, guarded, leery, sober, reasonable, hardheaded, incredulous, rational, sound, bright, judicious, watchful, unconvinced, intelligent, careful, clever, wary, well-advised, street smart, sapient, sane, brainy, sophisticated, cautious, pragmatic, valid, skeptical, streetwise, sage, suspicious, cynical, experienced, worldly-wise, cosmopolitan, doubting, wise, worldly, smart, sensible, sagacious, critical, prudent, knowing, logical.