impervious

Main Entry:
impervious [im-pur-vee-uhs]
Part of Speech: adjective
Definition: unable to be penetrated
Synonyms: closed to, hermetic, immune, impassable, impassive, impenetrable, impermeable, imperviable, inaccessible, invulnerable, resistant, sealed, tight, unaffected, unapproachable, unmoved, unpierceable, unreceptive, watertight
Antonyms: exposed, open, penetrable, responsive, sensitive, vulnerable
Main Entry: firm
Part of Speech: adjective
Definition: inflexible
Synonyms: close, close-grained, compact, compressed, concentrated, concrete, condensed, congealed, dense, fine-grained, hard, hardened, heavy, impenetrable, impermeable, impervious, inelastic, jelled, nonporous, refractory, rigid, set, solid, solidified, stiff, sturdy, substantial, thick, tough, unyielding
Antonyms: flexible, loose, slack, soft, supple, weak, yielding
Main Entry: hermetic
Part of Speech: adjective
Definition: airtight
Synonyms: completely sealed, impervious, sealed, shut, tight, waterproof, watertight
Main Entry: impenetrable
Part of Speech: adjective
Definition: dense
Synonyms: bulletproof, close, compact, firm, hard, hermetic, impassable, impermeable, impervious, inviolable, solid, substantial, thick, unpiercable
Antonyms: clear, penetrable, permeable, porous, soft, thin
Main Entry: impermeable
Part of Speech: adjective
Definition: impenetrable
Synonyms: airtight, dense, hermetic, impassable, impervious, leak-proof, nonporous, sealed, water-resistant, waterproof, watertight
Main Entry: impossible
Part of Speech: adjective
Definition: beyond the bounds of possibility
Synonyms: absurd, beyond, contrary to reason, cureless, futile, hardly possible, hopeless, hundred-to-one, impassable, impervious, impracticable, impractical, inaccessible, inconceivable, inexecutable, infeasible, insurmountable, irrealizable, irreparable, no-go, no-way, no-win, not a prayer, out of the question, preposterous, too much, unachievable, unattainable, uncorrectable, unfeasible, unimaginable, unobtainable, unreasonable, unrecoverable, unthinkable, unworkable, useless, visionary, way out
Antonyms: achievable, believable, obtainable, possible, reasonable, tenable
Main Entry: inaccessible
Part of Speech: adjective
Definition: out of reach
Synonyms: aloof, away, beyond, distant, elusive, far, far-off, faraway, impassable, impervious, impracticable, insurmountable, not at hand, out-of-the-way, remote, unachievable, unapproachable, unattainable, unavailable, unfeasible, ungettable, unobtainable, unreachable, unrealizable, unworkable
Antonyms: accessible, approachable, reachable
Main Entry: indifferent
Part of Speech: adjective
Definition: unfeeling, uninterested
Synonyms: aloof, apathetic, blasé, callous, cold, cool, detached, diffident, disinterested, dispassionate, distant, equitable, haughty, heartless, heedless, highbrow, impartial, impervious, inattentive, listless, neutral, nonchalant, nonpartisan, objective, passionless, phlegmatic, regardless, scornful, silent, stoical, supercilious, superior, unaroused, unbiased, uncaring, uncommunicative, unconcerned, unemotional, unimpressed, uninvolved, unmoved, unprejudiced, unresponsive, unsocial, unsympathetic
Antonyms: caring, compassionate, concerned, feeling, interested, involved, sympathetic
Main Entry: safe
Part of Speech: adjective
Definition: free from harm
Synonyms: buttoned up, cherished, free from danger, guarded, home-free, impervious, impregnable, in safety, intact, inviolable, invulnerable, maintained, okay*, out of danger, out of harm's way, preserved, protected, safe and sound, safeguarded, secure, sheltered, shielded, sitting pretty, snug, tended, unassailable, undamaged, under lock and key, under one's wing, unharmed, unhurt, uninjured, unmolested, unscathed, unthreatened, vindicated, watched
Antonyms: exposed, unguarded, unprotected, unsafe, vulnerable
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