(aged, literally ”year-full”), pl. iphaint. The spelling used in the source is ”ifant” (LR:400 s.v. YEN), but since the f arises from earlier (n > m +) p via nasal mutation, it should be written ph according to the spelling conventions described in LotR Appendix E.
Quenya
coita-
verb. live, be alive, have life
oia-
verb. live, pass one’s days
cuita
verb. live
(i guia, i chuia; the attested form is the imperative cuio). Also cuina (i guina, i chuinar).