Gnomish
gwail
noun. air
gwailtha-
verb. to air; expose to air
gwil-
verb. to sail, float, fly
gwaith
noun. people
gweith
noun. people
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!
A word appearing in the Gnomish Lexicon of the 1910s as G. gwailtha- “to air — expose to air”, a verb form of G. gwail “air” from the root ᴱ√gu̯il (GL/45).
Neo-Sindarin: I think this word can be salvaged as a causative verb ᴺS. gwiltha- of the same meaning, from the later version of its root: ᴹ√WIL which still have derivatives related to “air”, such as N. gwelw “air (as a substance)” (Ety/WIL).