Synonyms for Impregnable:

• adj.

  •all (adjective)
  • impregnable.
  •dangerous (adjective)
  • risky,
  • shaky,
  • portentous,
  • Jeopardous,
  • dangersome,
  • parlous,
  • touch and go,
  • on collision course.
  •fast (adjective)
  • true blue,
  • glued,
  • wedged,
  • staunch.
  •formidable (adjective)
  • dis-maying,
  • more daunting,
  • dis maying,
  • most daunting,
  • most dismaying,
  • more dismaying,
  • re-doubtable,
  • re doubtable.
  •impossible (adjective)
  • insurmountable.
  •indomitable (adjective)
  • un beatable,
  • un flinching,
  • most undefeatable,
  • more undefeatable,
  • un-assailable,
  • in-superable,
  • un-flinching,
  • in superable,
  • un assailable,
  • un-beatable.
  •insurmountable (adjective)
  • forget it,
  • Unmasterable,
  • not a prayer,
  • no way,
  • no-win.
  •invincible (adjective)
  • un-attackable,
  • most bulletproof,
  • in-violable,
  • more unsurmountable,
  • un attackable,
  • un surmountable,
  • un-surmountable,
  • un yielding,
  • un-yielding,
  • more bulletproof,
  • un-touchable,
  • in vincible,
  • most unattackable,
  • most unsurmountable,
  • un touchable,
  • in-vincible,
  • more unattackable,
  • in violable.
  •invulnerable (adjective)
  • indestructible.
  •safe (adjective)
  • safest,
  • home free,
  • buttoned up,
  • unmolested,
  • SAFER,
  • out of danger,
  • under lock and key,
  • free from danger,
  • Out of harm's way,
  • in safety,
  • unhurt,
  • Unthreatened,
  • uninjured,
  • safe and sound,
  • under one's wing,
  • home-free.
  •secure (adjective)
  • more riskless,
  • most riskless,
  • de-fended,
  • de fended.
  •tenable (adjective)
  • Warrantable,
  • condonable,
  • Vindicable,
  • maintainable.
  •unconquerable (adjective)
  • indefeasible,
  • irrepressible.
  •unshakable (adjective)
  • unsinkable.

• n.

  •
  • final,
  • invariable,
  • unvarying,
  • irreversible,
  • for good,
  • whatever happens,
  • rigid,
  • unchanging,
  • constant.
  •
  • robust,
  • stubborn,
  • irresistible,
  • heavy-duty,
  • sturdy,
  • DO,
  • win,
  • durable,
  • solid as a rock,
  • tough.
  •impregnable (noun)
  • unconquerable.

• Other synonyms:

  •
  • The.
  •defensible
  • tenable.
  •Other relevant words:
  • accented,
  • fastness,
  • powerful,
  • substantial,
  • unafraid,
  • potent,
  • immortal,
  • unasked,
  • citadel,
  • bond,
  • energy,
  • absolute,
  • fertile,
  • sovereign,
  • solidity,
  • unyielding,
  • solidified,
  • concrete,
  • fortified,
  • dissolute,
  • heavy,
  • granite,
  • impervious,
  • close,
  • impenetrable,
  • compressed,
  • Ineffaceable,
  • consistency,
  • pressure,
  • difficult,
  • unstoppable,
  • incorruptible,
  • dense,
  • incontrovertible,
  • defendable,
  • stronghold,
  • power,
  • guarded,
  • force,
  • condensed,
  • leathery,
  • consume,
  • intense,
  • protective,
  • stiff,
  • shielded,
  • Defended,
  • dissipated,
  • drive,
  • resistant,
  • deathless,
  • inextinguishable,
  • rocklike,
  • infrangible,
  • fertilizable,
  • overpowering,
  • steely,
  • protection,
  • agency,
  • petrified,
  • hostage,
  • pledge,
  • steadfast,
  • stony,
  • resistless,
  • unsubduable,
  • insurance,
  • flawless,
  • warm,
  • austerity,
  • rigidity,
  • immovable,
  • firmness,
  • incontestable,
  • Imperdible,
  • solid,
  • vigor,
  • insuperable,
  • indelible,
  • inflexible,
  • rugged,
  • dominating,
  • adamant,
  • safeguarded,
  • faultless,
  • untroubled,
  • strength,
  • intensity,
  • watertight,
  • flinty,
  • unquenchable,
  • quenchless,
  • bombproof,
  • impregnability,
  • protected,
  • defensible,
  • nonperishable,
  • firm,
  • undying,
  • made firm,
  • ineradicable,
  • good,
  • tempered,
  • hardened,
  • imperishable,
  • obdurate,
  • bad,
  • proof,
  • undestroyable,
  • unbeatable,
  • squander,
  • dependable,
  • callous,
  • sacrosanct,
  • overwhelming,
  • hard,
  • faithful,
  • mighty,
  • airtight.

Paraphrases for Impregnable:

• Equivalence

  • Adjective
    unassailable.

• Independent

  • Adjective
    spectacular.

• Other Related

  • Adjective
    fortified.

Antonyms for Impregnable:

• adj.

  • unyielding
    destructible, breakable.
  • Other antonyms:
    negotiable, infertile, malleable, porous, helpless, absorbent, sterile, open, penetrable, giving, squishy, elastic, passable, insecure, vincible, liable, yielding, powerless, flexible, unfertile, soft, unsafe, permeable, weak, pliable, superable, conquerable, bendable, surmountable.