必然性 bìránxìng inevitability Origin Definitions Defs Strokes Stroke Words Sentences Sents 必然 bìrán noun necessity a core rule or objective law of development that does not change according to human will性 xìng affix [-ity] Suffix used after verbs or adjectives to form nouns expressing a state, quality, or scope, similar to English "-ity", "-ness", or "-ism".