| Main Entry: | |
| Part of Speech: | noun |
| Definition: | belief that no God exists |
| Synonyms: | disbelief, doubt, freethinking, godlessness, heresy, iconoclasm, impiety, infidelity, irreligion, irreverence, nihilism, nonbelief, paganism, skepticism, unbelief |
| Antonyms: | belief, godliness, piety, religion |
| Main Entry: | heresy |
| Part of Speech: | noun |
| Definition: | unorthodox opinion, especially in religious matters |
| Synonyms: | agnosticism, apostasy, atheism, blasphemy, defection, disbelief, dissent, dissidence, divergence, error, fallacy, heterodoxy, iconoclasm, impiety, infidelity, misbelief, nonconformism, nonconformity, paganism, revisionism, schism, sectarianism, secularism, sin |
| Antonyms: | orthodoxy |
| Main Entry: | nihilism |
| Part of Speech: | noun |
| Definition: | refusal to believe |
| Synonyms: | abnegation, agnosticism, anarchy, atheism, denial, disbelief, disorder, lawlessness, mob rule, nonbelief, rejection, renunciation, repudiation, skepticism, terrorism |
| Antonyms: | belief, faith, obedience, optimism |
| Main Entry: | incredulousness |
| Part of Speech: | noun |
| Definition: | disbelief |
| Synonyms: | atheism, discredit, distrust, dubiety, incredulity, mistrust, nihilism, rejection, repudiation, spurning, unbelief, unbelievingness, unfaith |
| Main Entry: | unbelief |
| Part of Speech: | noun |
| Definition: | disbelief |
| Synonyms: | atheism, discredit, distrust, dubiety, incredulity, incredulousness, mistrust, nihilism, rejection, repudiation, spurning, unbelievingness, unfaith |