gnashy

adjective4

1. •
   Related to or typical of gnashing the teeth.
2. •
   Characterized by grinding or gnashing.

   • Deft and comfy, if gnashy of engine, the Prizm looks like an inspired sketch that somehow made it into metal and ought to be viewed as a traveling sculpture exhibit. — 1992
3. •
   Of a sound, grating and harsh.
4. •
   (informal) Unpleasant; tedious or undesirable.

   • "Dreary to explain and word all that gnashy science into flowery bower chat," said Emul. — 1994