deraign
1 of 2transitive verb (1)
de·raign
də̇ˈrān,
dē-
-ed/-ing/-s
archaic
: to defend or prove (a claim) or settle (a dispute) especially in personal combat
deraign
2 of 2transitive verb (2)
"
-ed/-ing/-s
archaic
: to discharge from a religious order
deraignment noun
plural -s
obsolete 
Word History
Etymology
Transitive verb (1)
Middle English dereynen, deraynen, from Old French deraisnier to defend, champion, from de- + raisnier to speak, plead, from (assumed) Vulgar Latin rationare, from Latin ration-, ratio reckoning, calculation, reason
Transitive verb (2)
Middle French desrengier to get out of place, disarrange