The Collaborative International Dictionary of English v.0.48:
Thieve \Thieve\, v. t. & i. [imp. & p. p. Thieved; p. pr. & vb. n. Thieving.] [AS. ge[thorn]e['o]fian.] To practice theft; to steal. [1913 Webster]WordNet (r) 3.0 (2006):
thieving adj 1: given to thievery [syn: thieving(a), thievish] n 1: the act of taking something from someone unlawfully; "the thieving is awful at Kennedy International" [syn: larceny, theft, thievery, thieving, stealing]