comˈpellent,a. Also -ant. [ad. L. compellent-empr.pple. of compellĕre to compel.] Compelling, constraining. 1847Mrs. Browning in Blackw. Mag. LXI. 555 Most full of invocation, and to be Most instantly compellant.1873R. Congreve Ess. (1874) 480 The compellent contagion of great examples.