niaisadjectivecommon nounadverbverbSyllable DecompositionniaisEtymologyexpandFrom the Vulgar Latin nidax, derived from nidus, "nest". (1175) nies.Definitions1. First person singular of the imperfect indicative of deny.expand2. Second person singular of the imperfect indicative of deny.expandSee alsoniais (cn.) niais (adv.)