Synonyms and related words :
artlessness, bluffness, bluntness, candor, childlikeness, cullibility, deceivability, directness, dupability, easiness, greenness, guilelessness, gullibility, hoaxability, ingenuousness, innocence, naiveness, naivety, openheartedness, openness, outspokenness, persuadability, plainness, seduceability, simpleheartedness, simplemindedness, simpleness, simplicity, sincerity, single-heartedness, single-mindedness, singleness of heart, softness, trustfulness, unguardedness, unsophisticatedness, unsophistication, unsuspiciousness, unwariness, weakness