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1. Insulting term of address for people who are stupid, irritating or ridiculous
    
2. A child with parents that are not married to each other
   - by-blow, love child, illegitimate child, illegitimate
    
3. Derogatory term for a variation that is not genuine; something irregular, inferior or of dubious origin
   "the architecture was a kind of bastard suggesting Gothic but not true Gothic";
   - mongrel

1. Fraudulent; having a misleading appearance
   - bogus, fake, phony [N. Amer], phoney, cod [Brit, informal]

Derived forms: bastards

See also: counterfeit, imitative

Type of: disagreeable person, issue, offspring, progeny, unpleasant person, variation

Encyclopedia: Bastard, John