Dictionary definition · bastard
noun
- insulting terms of address for people who are stupid or irritating or ridiculous
- the illegitimate offspring of unmarried parents
- derogatory term for a variation that is not genuine; something irregular or inferior or of dubious origin"the architecture was a kind of bastard suggesting Gothic but not true Gothic"
adjective
- fraudulent; having a misleading appearance
Source: Open English WordNet (CC BY 4.0).