I. adjective
1.
Synonyms: natural 5, artless, ingenuous, naive, unaffected, unartful, unartificial, unschooled, unsophisticated, unstudied
Related Word: childish, childlike; amateur, green, unexperienced; trusting; ||square
2.
Synonyms: plain 1, discreet, inelaborate, modest, unbeautified, undecorated, unelaborate, unornamented, unostentatious, unpretentious
Antonyms: elaborate
3.
actually or apparently deficient in intelligence
a poor simple woman easily duped
Synonyms: asinine, brainless, ||buffle-headed, fatuous, foolish, insensate, mindless, nitwitted, senseless, sheepheaded, silly, soft, spoony, unintelligent, unwitty, weak-headed, weak-minded, witless; compare retarded , stupid 1
Related Word: amateur, green, inexperienced, inexpert; credulous, gullible; childish, childlike, naive; ignorant, illiterate, uneducated, unschooled, untaught; crass, dense, dopey, dull, dumb, slow, stupid; doting, feebleminded, idiotic, retarded, simpleminded
Contrasted words: able, competent; alert, clever, keen; bright, intelligent, understanding
Antonyms: wise
4.
Synonyms: retarded , backward, dim-witted, dull, feebleminded, half-witted, imbecile, moronic, simpleminded, slow-witted
5.
Synonyms: pure 2, absolute, perfect, pure and simple, sheer, unadulterated, unalloyed, unmitigated, unmixed, unqualified
Related Word: inelaborate, stark; bald, bare, mere; fundamental, uncompounded
6.
Synonyms: easy 1, effortless, facile, light, royal, smooth, untroublesome
Related Word: incomplex, incomplicate
Idioms: simple as ABC
Antonyms: complex, complicated
II. noun
Synonyms: fool 3, butt, chump, dupe, fall guy, gull, mark, pigeon, sap, sucker