Anti Fre

Archaic British-English english slang (Circa 1400's)
Opposite of "Moost fre", from Chauncers "Canturbury Tales", referring to a disagreeable situation;
- Unpleasant, Wrong, Unacceptable

Howard: I've just inserted a squirrel up my arse!
Rufus: Egads, that is most Anti Fre!