Origin: 1400–50; late Middle English; see deceit, -ful Related formsde·ceit·ful·ly, adverb
de·ceit·ful·ness, noun
un·de·ceit·ful, adjective
Synonyms
1. insincere, disingenuous, false, hollow, designing, tricky, wily. 2. illusory, fallacious.
Antonyms
1. honest. 2. genuine.