The word "indomitableness" refers to the quality of being unbeatable or unconquerable. Its antonyms include words like "breakable," "defeatable," "pliable," "yielding," and "weak." These words indicate a lack of resistance or ability to be easily overcome. In contrast, "indomitableness" implies a strong will and determination to persist even in the face of adversity. Other antonyms for this word are "docility," "compliance," "malleability," and "submission." These words point to the opposite qualities of flexibility, obedience, and adaptability. While "indomitableness" is commonly associated with strength and fortitude, its antonyms emphasize vulnerability and the willingness to surrender.