v. t. [ imp. & p. p. Bastardized (&unr_;); p. pr. & vb. n. Bastardizing. ]1. To make or prove to be a bastard; to stigmatize as a bastard; to declare or decide legally to be illegitimate. [ 1913 Webster ]
The law is so indulgent as not to bastardize the child, if born, though not begotten, in lawful wedlock. Blackstone. [ 1913 Webster ]
2. To beget out of wedlock. [ R. ] Shak. [ 1913 Webster ]
3. to change something (for example, art forms) so that its value declines; to debase. Syn. -- bastardise. [ WordNet 1.5 ]