A noun meaning “river” developed from the primitive form ᴹ✶kelun (Ety/KEL), where the [[ilk|final [un] became [on]]].
Conceptual Development: This word was initially marked as Noldorin.
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
duil
noun. river
duilwen
place name. Duilwen
celon
noun. river
A noun meaning “river” developed from the primitive form ᴹ✶kelun (Ety/KEL), where the [[ilk|final [un] became [on]]].
Conceptual Development: This word was initially marked as Noldorin.
myrilind
noun. nightingale
The Ilkorin noun for “nightingale”, appearing as both murilind and myrilind (Ety/MOR, TIN). Its Quenya cognate ᴹQ. morilinde indicates a primitive form of ✱✶morilindē, further supported by the rejected Ilkorin form morilind (EtyAC/MOR). This would have produced murilind according to the rules of Ilkorin i-affection. The variant form myrilind hints at a different (dialectical?) phonetic development, as pointed out by Helge Fauskanger (AL-Ilkorin/murilind). See the entry on i-affection for further discussion.
A noun meaning “river”, simply an elaboration of its root ᴹ√DUY (Ety/DUI).