adj. stealthful, furtive, secretive, secret, sly, clandestine, surreptitious, sneaky, sneaking, skulking, covert, undercover, underhand(ed), backstairs, hugger-mugger, closet He was as stealthy as a cat in his movements They were stealthy collectors of pornography.
STEALTHY
Meaning of STEALTHY in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012