noun

1. A person who was born out of wedlock, and hence often considered an illegitimate descendant.

2. A mongrel (biological cross between different breeds, groups or varieties).

3. (typically referring to a man) A contemptible, inconsiderate, overly or arrogantly rude or spiteful person.

   “Some bastard stole my car while I was helping an injured person.”

Synonyms: arsehole, asshole, son of a bitch, born in the vestry, illegitimate, love-child

verb

1. To bastardize.

adjective

1. Of or like a bastard (illegitimate human descendant).

2. Of or like a bastard (bad person).

3. Of or like a mongrel, bastardized creature/cross.

interjection

1. Exclamation of strong dismay or strong sense of being upset.