A word for “slave” appearing in notes on the Common Eldarin Article (CEA) from 1969 (PE23/139). N. mûl “slave, thrall” also appeared in The Etymologies of the 1930s, derived from primitive ᴹ✶mōl under the root ᴹ√MŌ having to do with “labour” (Ety/MŌ). In Sindarin and Noldorin, a [[os|primitive long [ō] became [ū]]] (PE18/96; PE19/91).
Conceptual Development: In the Gnomish Lexicon from the 1910s, one word for “slave” was G. guinir, apparently an agental form of the adjective guin “possessed”. The suffix -(n)ir was usually limited to feminine words, so perhaps this word was exclusively female.
Another word for “slave, thrall, servant” was G. drog (GL/31), and the word ᴱN. drog “slave” reappeared in the Early Noldorin word lists of the 1920s (PE13/142, 155). This word was derived from primitive ᴱ✶norokā́ > ✱nrokā after which the [[g|initial [nr] becoming [dr]]] (GL/31), though at this stage its relationship to other roots is unclear.
A neologism coined by Fiona Jallings in the Vinyë Lambengolmor Discord Server (VLDS) on 2018-07-08, a cognate of [ᴱQ.] mul- “grind”.