naiveness

1 readiness to believe the claims of others without sufficient evidence I can't believe the naiveness of people who don't realize there's always some catch to so-called free offers Synonyms credulousness, gullibility, credulity, naïveté (also naivete or naiveté), simplenessRelated Words artlessness, simplicity, unsophistication, unwariness, unworldliness; belief, credibility, faith, trustNear Antonyms sophistication, worldliness; distrust, misdoubt, mistrust, suspicion, suspiciousness, wariness; doubt, uncertaintyAntonyms incredulity, skepticism

2 the quality or state of being simple and sincere the innate naiveness of young children is one of their most endearing qualities Synonyms artlessness, greenness, guilelessness, ingenuousness, innocence, naïveté, naivety (also naïvety) [chiefly British], naturalness, simplemindedness, simpleness, simplicity, unsophistication, unworldliness, viridityRelated Words candor, frankness, genuineness, honesty, openness, sincerity, straightforwardness, unaffectedness, unpretentiousness; callowness, childishness, coltishness, inexperience, rawness; insularity, parochialism, provincialism; carelessness, heedlessness, thoughtlessness; ignorance, obliviousness, unawareness; credulity, credulousness, gullibility, impressionability; idealism, impracticality, optimismNear Antonyms affectedness, artificiality, pretentiousness; deviousness, dishonesty, insincerity; disbelief, doubtfulness, incredulity, suspiciousness; carefulness, caution, street smarts, wariness; pessimism, skepticism; maturityAntonyms artfulness, cynicism, knowingness, sophistication, worldliness