RE-

(prefix) en- (as in entulessë "return" and envinyatar "renewer", q.v. Also used on verbs: \#enquat- "refill" [only fut. enquantuva is attested, see REFILL]. Before the consonants l, m, r, s, the prefix en- would be assimilated to *el-, *em-, *er-, and *es-, respectively. Very early [The Lost Tales] "Qenya" has an- instead of en- [see LT1:184].)