So he took over or demolished their adulterine castles and restored the older obligation of every freeman to serve in defense of the realm, the fyrd, which was a military draft.
"Our Legal Heritage, 4th Ed."
S. A. Reilly
I know, said Hereward, that the French look on us English monk-made knights as spurious and adulterine, unworthy of the name of knight.
"Hereward, The Last of the English"
Charles Kingsley