The Sindarin name for the “Westron” language (PM/316). Its initial element is clearly annûn “west”, but the meaning of the suffix -aid is unclear. It might be some variation on the gerund-suffix -ed/-ad seen in nouns like genediad “reckoning”, though this suffix usually forms nouns from verbs, not adjectives.
annúnaidproper name. Westron
annúnaidnoun. the "Westron" language (one of the names for Common Speech)
(a language) Annúnaid