Origin of perforceMiddle English par force ; from OFr: see per and amp; force
Origin of perforceMiddle English par force, from Old French : par, by (from Latin per; see per) + force, force; see force.
- (archaic) By force.
(third-person singular simple present perforces, present participle perforcing, simple past and past participle perforced)
From Middle English par force, from Anglo-Norman, from Old French par force (“by force")