artless bluff blunt born yesterday candid childlike confiding credulous dependent depending direct doting easily taken in easy of belief fond frank guileless inclined to believe infatuated ingenu ingenuous innocent naive open openhearted outspoken overconfiding overcredulous overtrustful overtrusting plain reliant relying simple simplehearted simpleminded sincere single-hearted single-minded superstitious trustful trusting trusty uncritical undoubting unguarded unreserved unskeptical unsophisticated unsuspecting unwary without suspicion