1) Bastardise 2) Corrupt 3) Debase 4) Debauch 5) Demoralise 6) Demoralize 7) Deprave 8) Misdirect 9) Pervert 10) Profane 11) Subvert 12) To beget out of wedlock 13) To debase 14) Vitiate 1) Bastardise 
• (v. t.) To make or prove to be a bastard; to stigmatize as a bastard; to declare or decide legally to be illegitimate. • (v. t.) To beget out of wedlock.
Bas'tard·ize transitive verb [ imperfect & past participle Bastardized ; present participle & verbal noun Bastardizing .] 1. To make or prove to be a bastard; to stigmatize as a bastard; to declare or decide legally to be illegiti...
[v] - change something so that its value declines 2. [v] - declare a child to be illegitimate
bastardise verb declare a child to be illegitimate