Source : Webster's Revised Unabridged Dictionary (1913)

Self-destructive \Self`-de*struc"tive\, a.
   Destroying, or tending to destroy, one's self or itself;
   rucidal.

Source : WordNet®

self-destructive
     adj : dangerous to yourself or your interests; "suicidal
           impulses"; "a suicidal corporate takeover strategy"; "a
           kamikaze pilot" [syn: {suicidal}]