Wordnet 3.0
ADVERB (1)
1.
to a degree impossible of achievement;
- Example: "long thought to be an impossibly difficult operation"- Example: "impossibly far from sources of supply"
The Collaborative International Dictionary of English v.0.48:
Impossibly \Im*pos"si*bly\, adv.
Not possibly. --Sir. T. North.
[1913 Webster]
WordNet (r) 3.0 (2006):
impossibly
adv 1: to a degree impossible of achievement; "long thought to
be an impossibly difficult operation"; "impossibly far
from sources of supply" [ant: possibly]