bastardy

[ bas-ter-dee ]
/ ˈbæs tər di /

noun

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

Origin of bastardy

1400–50; late Middle English < Anglo-French, Old French bastardie. See bastard, -y3
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British Dictionary definitions for bastardy

bastardy

/ (ˈbɑːstədɪ, ˈbæs-) /

noun

archaic the condition of being a bastard; illegitimacy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012