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Imperially
Imperil
Imperilment
Imperious
Imperiously
Imperiousness
Imperishability
Imperishable
imperishingness
Imperitia culpae annumeratur
Imperium
Imperiwigged
Impermanence
impermanency
Impermanent
Impermeability
-- Impermeable --
impermeableness
impermissibility
Impermissible
impermissibly
Imperscrutable
Imperseverant
Impersonal
Impersonal verb
Impersonalitas non concludit nec ligat
Impersonality
Impersonally
Impersonate
Impersonation
Impersonator
Imperspicuity
Imperspicuous

Impermeable

Im`per´me`a`ble
a.1.Not permeable; not permitting passage, as of a fluid. through its substance; impervious; impenetrable; as, India rubber is impermeable to water and to air.
Adj.1.impermeable - preventing especially liquids to pass or diffuse through; "impermeable stone"; "an impermeable layer of scum"; "a coat impermeable to rain"
Antonyms:
permeable - allowing (especially liquids) to pass or diffuse through; "permeable membranes"; "rock that is permeable by water"
close, close-knit, close-textured, close-woven, closed, compact, compacted, compressed, concentrated, concrete, condensed, congested, consolidated, crammed, crammed full, crowded, dense, firm, gluey, hard, heavy, hermetic, holeproof, impassable, impenetrable, impervious, jam-packed, jammed, massive, nonporous, nonpuncturable, packed, punctureproof, sealed, serried, solid, substantial, thick, thick-growing, thickset, unpassable, unperforable, unpierceable, viscid, viscose, viscous

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