ingenuous
[adjective]
Synonyms: naive, artless, guileless, honest, innocent, open, plain, simple, sincere, trusting, unsophisticated

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Antonyms: disingenuous
Contrasted words: covert, furtive, stealthy, surreptitious, underhand, artful, crafty, foxy, guileful, insidious, sly, tricky, wily

[TahlilGaran] English Synonym Dictionary ▲

in‧gen‧u‧ous /ɪnˈdʒenjuəs/ adjective
[Date: 1500-1600; Language: Latin; Origin: ingenuus 'born, free born, honest', from gignere 'to produce children']
an ingenuous person is simple, trusting, and honest, especially because they have not had much experience of life ⇒ disingenuous
—ingenuously adverb
—ingenuousness noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲