bastardize

• POS: Verb (transitive)
• HYPHEN: bas=tard=ize

CIDE DICTIONARY

bastardize, v. t. 

•  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."  [1913 Webster]
•  To beget out of wedlock.  Shak.  [1913 Webster]
•  to change something (for example, art forms) so that its value declines; to debase.  [WordNet 1.5]

OXFORD DICTIONARY

bastardize, v.tr. (also -ise)
1 declare (a person) illegitimate.
2 corrupt, debase.

Derivative

bastardization n.

THESAURUS

bastardize

adulterate, brutalize, contaminate, corrupt, cut, debase, debauch, demoralize, denaturalize, denature, deprave, dilute, doctor, doctor up, fortify, lace, pervert, pollute, spike, tamper with, vitiate, warp, water, water down