The Collaborative International Dictionary of English v.0.48:
Self-destructive \Self`-de*struc"tive\, a. Destroying, or tending to destroy, one's self or itself; rucidal. [1913 Webster]WordNet (r) 3.0 (2006):
self-destructive adj 1: dangerous to yourself or your interests; "suicidal impulses"; "a suicidal corporate takeover strategy"; "a kamikaze pilot" [syn: self-destructive, suicidal]