v. t. [ imp. & p. p. Efforced p. pr. & vb. n. Efforcing ] [ OF. esforcier (F. s'efforcer to exert one's self), LL. exforciare; L. ex + fortis strong. See Force. ] To force; to constrain; to compel to yield. [ Obs. ] Spenser. [ 1913 Webster ]