Webster's Revised Unabridged Dictionary · 1913

Deforce

Deforce , transitive verb

[Old French deforcier; de- or des- (Latin de or dis-) + forcier, French forcer. See Force, v.]

(a)
(Law) To keep from the rightful owner; to withhold wrongfully the possession of, as of lands or a freehold.
(b)
(Law) To resist the execution of the law; to oppose by force, as an officer in the execution of his duty. — Burrill