A word appearing in The Etymologies of the 1930s as {ñalme >>} yalme or indyalme “clamour” derived from the root {ᴹ√ÑGAL(AM) >>} ᴹ√ÑGYAL(AM) “talk loud or incoherently” (Ety/ÑGAL; EtyAC/ÑGAL). The form indyalme can be explained as the result of the usual syllabification of initial ṇ̃ to iñ, and then the resulting ingy- becoming indy- because of how velars became dentals before y. The form yalme is more difficult to explain, however, since according to the contemporaneous Outline of Phonetic Development (OP1), initial ñgy became ñy and then ny (PE19/36). Thus the expected form would be *nyalme (†ñyalme).

Neo-Quenya: For purposes of Neo-Quenya, I recommend using indyalme over yalme as more consistent with what Tolkien wrote on Quenya phonology. This is somewhat challenging, since in The Etymologies as published in The Lost Road, Christopher Tolkien gave only the form yalme (LR/377), and the form indyalme was not published until Carl Hostetter and Patrick Wynne’s Addenda and Corrigenda to the Etymologies from 2004 (VT44/3). This makes the form indyalme more obscure that yalme, but I’d still recommend its use.