bastardly

noun

1. a person born of parents not married to each other; illegitimate child
2. anything spurious, inferior, or varying from standard
3. Slang a person regarded with contempt, hatred, pity, resentment, etc. or, sometimes, with playful affection: a vulgar usage

adjective

1. of illegitimate birth or of uncertain origin
2. of a size or shape that differs from the normal or standard
3. that is not truly the designated thing but that closely resembles it: gneiss is called bastard granite
4. not genuine; sham; inferior