2 文書を見つけるための辞書。

• unattackable, strong, secure, impregnable, unassailable, inviolable
• 岩乗, 堅牢, 安全, 堅い, 頑丈, 牢固たる, 聢り, 頑強, 安泰, 強い, 確り, 堅固, 強固, 固い
• immune to attack; incapable of being tampered with; "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection"
• 攻撃に対しての免疫がある

• firm, solid
• 丈夫, 岩乗, 堅牢, 硬い, 堅い, 頑丈, 固い
• not soft or yielding to pressure; "a firm mattress"; "the snow was firm underfoot"; "solid ground"
• 柔らかくないか圧力に屈さない