a- (2) a prefix occurring in the Markirya poem (Tolkien first used na-, then changed it). It may be prefixed to verbal stems following a noun that is the object of sense-verbs like "see" and "hear" when the verb it is prefixed to describes what happens to this noun, as in man cenuva lumbor ahosta[?] (changed from na-hosta), "who shall see the clouds gather?" (hosta = "gather").
acas(“k”) noun “neck” (the bony part of the neck, not including throat), pl. axi(“ks”) (and so perhaps general stem-form ax-). Also sg. axë (said to be a “later” form apparently replacing acas). The word is also used geographically of rock ridges. (PE17:92)
acca("k") adv. "too" (= excessively, as in "too big") (PE13:108)
accar- vb. “do back; react; requite, avenge” (PE17:166). Also ahtar-. (The note containing this form was struck out, but the related Sindarin word acharn “vengeance” appears in the narratives.)
Acairis ("k") fem. name, "bride" (LT1:252; in Tolkien's later Quenya, "bride" is rather indis)