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