adj. (used of eyes) fully open or extended; "stared with wide eyes"

adj. exhibiting childlike simplicity and credulity; "childlike trust"; "dewy-eyed innocence"; "listened in round-eyed wonder"

adj. inclined to believe or confide readily; full of trust; "great brown eye, true and trustful"- Nordhoff & Hall

adj. clearly manifest; evident; "frank enjoyment"

adj. without dissimulation; frank; "my honest opinion"

adj. with the mouth wide open indicating boredom or sleepiness; "a yawning congregation"

adj. (used of eyes) open and fixed as if in fear or wonder; "staring eyes"

adj. not wise in the ways of the world; "either too unsophisticated or too honest to promise more than he could deliver"; "this helplessly unworldly woman"- Kate O'Brien

adj. showing a lack of judgment or experience; "so credulous he believes everything he reads"

adj. easily tricked because of being too trusting; "gullible tourists taken in by the shell game"

adj. lacking practical experience or training

adj. lacking in sophistication or worldliness; "a child's innocent stare"; "his ingenuous explanation that he would not have burned the church if he had not thought the bishop was in it"

adj. lacking subtlety and insight; "a simple-minded argument"

adj. having or appealing to those having worldly knowledge and refinement and savoir-faire; "sophisticated young socialites"; "a sophisticated audience"; "a sophisticated lifestyle"; "a sophisticated book"