SIMPLICITY Meaning of SIMPLICITY in English n. 1.Plainness, naturalness, chasteness, neatness.2.Artlessness, sincerity, frankness, openness, truth, harmlessness.3.Plainness, clearness.4.Silliness, folly, weakness. Soule. Dictionary of English synonyms. Словарь английских синонимов. 2012