A word for “dragonfly” in the Gnomish Lexicon of the 1910s, a combination of G. sitha “fly” and gong a word for “goblin” (GL/41, 68). Tolkien said that the g survived in the compound because it was a new compound, indicating that soft mutation only applied to ancient compounds in Gnomish.
Sindarin
budhulug
noun. dragonfly
A neologism for “dragonfly” coined by Paul Strack in 2018 specifically for Eldamo, a combination of S. budhu “large fly” and S. lhûg “snake”, inspired by G. sithaling “fly snake, dragonfly” (GL/68).