Deforce \De*force"\, v. t. [imp. & p. p. {Deforced}; p. pr. & vb. n. {Deforcing}.] [OF. deforcier; de- or des- (L. de or dis-) + forcier, F. forcer. See {Force}, v.] (Law) (a) To keep from the rightful owner; to withhold wrongfully the possession of, as of lands or a freehold. (b) (Scots Law) To resist the execution of the law; to oppose by force, as an officer in the execution of his duty. --Burrill.