N. gwelwen n. “air, lower air” (Category: Air, Ether)
A noun in The Etymologies of the 1930s given as the equivalent of ᴹQ. vilwa “lower air” under the root ᴹ√WIL (Ety/WIL). Since ᴹQ. vilwa was changed to wilma, I’d abandon this word and use N. gwilith instead.
Reference ✧ Ety/WIL ✧ “air, lower air”
|gwelw||“air (as a substance)”||✧ Ety/WIL|
|#-en||“adjective suffix”||✧ Ety/WIL (#-en)|