Entry 1 sense Webster, 1913 Efforce · Ef·force · IPA /ɪˈfɔː(ɹ)s/ 01 v. t. To force; to constrain; to compel to yield. imp. & p. p. Efforced; p. pr. & vb. n. Efforcing 1. To force; to constrain; to compel to yield.[Obs.]