A verb meaning “abide, be settled or fixed”, most notably used in Elendil’s Oath (LotR/967; UT/317), clearly derived from the root √MBAR “settle, dwell”. This verb appeared as far back as the Qenya Lexicon of the 1910s, where ᴱQ. mara- “dwell, live” was derived from the early root ᴱ√MBARA (QL/63).
Neo-Quenya: For purposes of Neo-Quenya, I would only use mar- intransitively, mostly in the sense “dwell, live (in a place)”.
A word appearing as Q. kuita “live” in Late Notes on Verb Structure (LVS) from 1969, most notably in the phrase kuita’r pare “live and learn”, derived from the root √KUY “live” (PE22/154, 156).
Neo-Quenya: For purposes of Neo-Eldarin, I prefer to use √KUY for “wake” (NM/274) and √KOY for “live”; see those roots for discussion. As such, I would use Q. coita- for “to live” and would assume ᴺQ. cuita- means to “to waken, rouse”, as did its primitive form from the 1950s: ✶kuitā- (PE22/136). I further assume cuita- “to waken, rouse” is a transitive/causative verb (taking a direct object) based on the long ā in this primitive form, with a past tense cuitane “woke, roused”.