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From The Collaborative International Dictionary of English v.0.44 [gcide]:
Impenetrable \Im*pen"e*tra*ble\, adjective [L. impenetrabilis; pref. im- not + penetrabilis penetrable: cf. F. imp['e]n['e]trable.]
1. Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an impenetrable shield.
Highest woods impenetrable To star or sunlight. --Milton.
2. (Physics) Having the property of preventing any other substance from occupying the same space at the same time.
3. Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, or heart.
They will be credulous in all affairs of life, but impenetrable by a sermon of the gospel. --Jer. Taylor.
From WordNet (r) 2.0 [wn]:
impenetrable
adjective
1: not admitting of penetration or passage into or through; "an impenetrable fortress"; "impenetrable rain forests" [ant: {penetrable}]
2: permitting little if any light to pass through because of denseness of matter; "dense smoke"; "heavy fog"; "impenetrable gloom" [syn: {dense}, {heavy}]
3: impossible to understand; "impenetrable jargon"
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
115 Moby Thesaurus words for "impenetrable": Greek to one, ambiguous, arcane, beyond reach, beyond understanding, cabalistic, close, close-knit, close-textured, close-woven, closed forever to, closed to, compact, compacted, compressed, concentrated, concrete, condensed, congested, consolidated, crammed, crammed full, crowded, dense, exuberant, firm, flourishing, gluey, gross, hard, heavy, holeproof, impassable, impermeable, impervious, impregnable, inaccessible, inarticulate, incognizable, incoherent, incomprehensible, incontestable, indomitable, inexpugnable, inscrutable, insuperable, invincible, inviolable, invulnerable, irresistible, jam-packed, jammed, jungled, jungly, lost to, lush, luxuriant, massive, mystic, nonporous, nonpuncturable, numinous, out of reach, overgrown, overpowering, overrun, overwhelming, packed, past comprehension, punctureproof, rambling, rank, resistless, riotous, serried, solid, substantial, thick, thick-growing, thickset, un-come-at-able, unaccessible, unaccountable, unapproachable, unassailable, unattainable, unavailable, unbeatable, unconnected, unconquerable, undiscoverable, unfathomable, ungettable, ungraspable, unguessed, unintelligible, unknowable, unobtainable, unpassable, unperforable, unpierceable, unprocurable, unreachable, unsearchable, unsecurable, unsubduable, unsurmountable, unweeded, unyielding, viscid, viscose, viscous, weed-choked, weed-ridden, weedy
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Definitions retrieved from local copies of the freely distributed DICT client/server software and databases. Click here for database copyright information. - KM |