Dictionary

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

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

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

Example: Some bastard stole my car while I was helping an injured person.

A man, a fellow, a male friend.

Example: Get over here, you old bastard!

To bastardize.

Of or like a bastard (illegitimate human descendant).

Of or like a bastard (bad person).

Of or like a mongrel, bastardized creature/cross.

Of abnormal, irregular or otherwise inferior qualities (size, shape etc).

Example: a bastard culverin

Exclamation of strong dismay or strong sense of being upset.