Origin of disallowMiddle English disalouen from Anglo-French desalouer, to blame, disapprove of: see dis- and allow
transitive verbdis·al·lowed, dis·al·low·ing, dis·al·lows
- To refuse to allow: “[The government] disallowed his aging and dying parents any reunion with their only child” ( John Simon )
- To reject as invalid, untrue, or improper.
Origin of disallowMiddle English disallowen from Old French desalouer to reprimand des- dis- alouer to approve ; see allow .
(third-person singular simple present disallows, present participle disallowing, simple past and past participle disallowed)
From Middle English, from Old French desalouer; synchronically analyzable as dis- + allow.