A noun appearing as G. fufril “moth” in the Gnomish Lexicon of the 1910s (GL/36).

Neo-Sindarin: The etymology of G. fufril isn’t clear, but could be derived from an early root *ᴱ√FUVU. I prefer to adapt this as a Neo-Root ᴺ√PHUM rather than ᴺ√PHUV/PHUB, since derivatives of ᴺ√PHUM would preserve the base vowel u. Thus I would adapt this word as ᴺS. fyvril “moth” < *phumril with i-affection; perhaps the final element is a feminine suffix as seen in N. thlingril “spider”. Admittedly this is all a very loose adaptation.