Superstitious

a.	1.	Of or pertaining to superstition; proceeding from, or manifesting, superstition; as, superstitious rites; superstitious observances.
	2.	Evincing superstition; overscrupulous and rigid in religious observances; addicted to superstition; full of idle fancies and scruples in regard to religion. Ye men of Athens, I perceive that in all things ye are too superstitious. - Acts xvii. 22.
	3.	Overexact; scrupulous beyond need. Superstitious use (Law) the use of a gift or bequest, as of land, etc., for the maintenance of the rites of a religion not tolerated by the law. - Mozley & W.

Adj.

1.

superstitious - showing ignorance or the laws of nature and faith in magic or chance; "finally realized that the horror he felt was superstitious in origin"

credulous, doting, easily taken in, easy of belief, fond, inclined to believe, infatuated, overconfiding, overcredulous, overtrustful, overtrusting, trustful, trusting, uncritical, undoubting, unskeptical, unsuspecting, unsuspicious