IMPERTURBED
Im`per*turbed", a.
Defn: Not perturbed.
IMPERVIABILITY
Im*per`vi*a*bil"i*ty, n.
Defn: The quality of being imperviable.
IMPERVIABLE
Im*per"vi*a*ble, a.
Defn: Not pervious; impervious. [R.] — Im*per"vi*a*ble*ness, n. [R.]
IMPERVIOUS Im*per"vi*ous, a. Etym: [L. impervius; pref. im- not + per through + via way. See Voyage.]
Defn: Not pervious; not admitting of entrance or passage through; as,
a substance impervious to water or air.
This gulf impassable, impervious. Milton.
The minds of these zealots were absolutely impervious. Macaulay.
Syn.
— Impassable; pathless; impenetrable; imperviable; impermeable.
— Im*per"vi*ous*ly, adv.
— Im*per"vi*ous*ness, n.
IMPERY
Im"per*y, n.