From Wiktionary, the free dictionary
From s- + archaic morfia (“mouth”)[1]
smorfia f (plural smorfie)
- grimace; face (funny face)
- Synonym: sberleffo
- smirk, simper
- snarl
- ^ smorfia in garzantilinguistica.it – Garzanti Linguistica, De Agostini Scuola Spa