相关单词同义词unfathomable, abysmal, 近义词 bottomless 无底的, deep 深的, incomprehensible 不能理解的, immeasurable 不可计量的, unfathomable 深得无法到达底部的..., obscure 难解的, incalculable 不可数的, mysterious 神秘的, impenetrable 不能穿过的, profound 深奥的, cryptic 隐秘的, inestimable 无价的临近词fathom相似词fatherland, fatherless, fatherly, fathom, fatigue, fatigued, fatiguing, fatness, 返回 fathomless