impregnable

難攻不落の,堅固な

impregnable の類語

unassailable, strong, secure, invulnerable, hard, inviolable, safe, invincible, unbeatable, protected, indestructible, nonperishable, unyielding, inexpugnable, undying, indomitable, indelible, overwhelming, defended, incorruptible, immortal, deathless, imperishable, unconquerable, irresistible, incontestable, insuperable, proof, impenetrable, overpowering, ineradicable, unattackable, inextinguishable, unsubduable, mighty, unquenchable, guarded, fertile, undefeatable, shielded, undestroyable, ineffaceable, unsurmountable, resistless, safeguarded, tenable, unasked, quenchless, conceptive

impregnable の反意語

vulnerable, sterile, weak

関連語

impregnability

impregnable の言い換えを探すには

impregnable（難攻不落の）の類語・言い換え（パラフレーズ）を、日本語訳つきで関連度順に並べています。英作文の語彙を増やしたいとき、長文読解で本文と選択肢の言い換えを見抜きたいときに使えます。