| Unbelief 1. (n.) The withholding of belief; doubt; incredulity; skepticism. 2. (n.) Disbelief; especially, disbelief of divine revelation, or in a divine providence or scheme of redemption. Thesaurus Entries apprehension, atheism, disbelief, distrust, doubt, dubiety, faithlessness, gentilism, incredulity, infidelity, minimifidianism, misgiving, mistrust, nullifidianism, qualm, secularism, skepticism, suspicion, unbelievingness, uncertainty, unfaith |