1. To declare illegitimate.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• basterdized,
• bastardised,
• bastaridized,
• bastarcise,
• bastadise,
• bastardsie,
• bastardies,
• bastardise,
• basterdise,
• bastardized,
• vastardize,
• nastardize,
• hastardize,
• bastardizd,
• basardize,
• bastradize,
• bastardizm,
• altarwize,
• dastardizee,
• dastardize

• bacterium,
• bacteriemia,
• bacterise,
• bactericide,
• backstroke,
• bastardised,
• bastardized,
• bastardy,
• bastard wing,
• bass guitar,
• basseterre,
• bacteroid,
• bacterize,
• bastard,
• bacteriacide,
• bacterioid,
• bastarache,
• bastardise,
• bacteria bed,
• bastardly,
• bacteriaemia,
• backstroker,
• backstair,
• bacteroides,
• bacterial,
• bacteria,
• Backstrom,
• bastard title,
• bustard.

The adverb for the word "bastardize" is "bastardly".

The adjective form of the word "bastardize" is "bastardized".

The plural form of "bastardize" is "bastardizes".

The singular form of the word "bastardize" is "bastardization"