bastardy

noun

1. the state or condition of being a bastard; illegitimacy.
2. the act of begetting a bastard.

noun

1. archaic the condition of being a bastard; illegitimacy

n.

early 14c., “condition of illegitimacy,” from Anglo-French and Old French bastardie, from bastard (see bastard). As “begetting of bastards, fornication” from 1570s.