|Origin:||Medieval Latin bastardus, probably from bastum 'saddle for carrying bags'; probably from the idea of a child produced as a result of sex with a traveler|
bas‧tard S3 [countable]
a very offensive word for someone, especially a man, who you think is unpleasant. Do not use this word.:
• You lying bastard!
2 spoken informal not polite
a man who you think is very lucky or very unlucky - often used humorously:
• He's gone straight to the top, the lucky bastard.
• The poor bastard fell off his horse.
3 British English spoken informal
something that causes difficulties or problems:
Life's a bastard sometimes.
someone who was born to parents who were not married