必要性 bìyàoxìng necessity Definitions Defs Origin Strokes Stroke Words Sentences Sents 必要 bìyào adjectivenoun necessary necessary; essential; indispensable; required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".
