covert

adj. 秘密的，隐密的

couture, couturier, cove, coven, covenant, Coventry, cover, cover charge, cover girl, cover note, cover over, cover up, cover-up, coverage, coveralls, covered, covered wagon, covering, covering letter, coverlet, covertly, covet, covetous, covetously, covetousness, covey, cow, cow shed, cow-pat, coward, cowardice, cowardly, cowbell, cowboy, cowcatcher, cower, cowgirl, cowhand, cowherd, cowhide,