A feminine suffix common in Quenya names, in one place given as a feminine patronymic (PE17/170), though there are no attested Quenya names in which it was used that way.
Conceptual Development: In The Etymologies of the 1930s, ᴹQ. ien was given as a (suffixal?) variant of ᴹQ. yen(de) “daughter” (Ety/YŌ; EtyAC/YŌ), but again there are no actual names from this period using the suffix in that way.
-ien fem. ending in certain names like Yávien, Silmarien (q.v.) At one point -ien implied "daughter", see -iel above.