Quenya 

onya

my child

onya noun "my child", "my son" (not the normal word for "son", however [cf. yondo] onya seems to be derived from the stem ONO "beget") This may be a shortened form of *onnanya (see onna), like hinya "my child" (q.v.) is shortened from hinanya. It may be, then, that onya (like hinya) is only used in vocative. (UT:174)

onya

noun. my child

An affection term for “my child”, a reduction of the 1st sg. possessive form onnanya of onna “child” (PE17/170; UT/174-5).

Elements

WordGloss
onna“child, child, *offspring; [ᴹQ.] creature”
-nya“my”
Quenya [PE17/170; UT/174; UT/175] Group: Eldamo. Published by

onna

creature

onna noun "creature" (ONO), "child" (PE17:170), also translated "child" in the plural compound Aulëonnar "Children of Aulë", a name of the Dwarves (PM:391), and apparently also used = "child" in the untranslated sentence nai amanya onnalya ter coivierya ("k") "be it that your child [will be] blessed thoughout his/her life" (VT49:41). The form onya (q.v.), used as a vocative "my child", is perhaps shortened from *onnanya.