Here are some examples of how to use "indomitable" in a sentence:
Describing a person's character:
* "Despite facing countless setbacks, her indomitable spirit kept her going."
* "He possessed an indomitable will to succeed, no matter the obstacles."
* "The athlete's indomitable determination helped her overcome her injury."
Describing a group's or a nation's strength:
* "The rebels showed indomitable courage in the face of oppression."
* "The country's indomitable spirit helped it survive the war."
* "The team's indomitable defense was a key factor in their victory."
Describing a force of nature:
* "The indomitable power of the ocean has fascinated mankind for centuries."
* "The indomitable will of the wind pushed the sails forward."
* "The indomitable spirit of the mountain stood defiant against the storm."
Literary use:
* "The hero's indomitable spirit, though battered and bruised, remained unbroken."
* "The novel's indomitable protagonist faced the unknown with unwavering resolve."
Note: "Indomitable" is often used with words like "spirit", "will", "courage", "determination", "strength", or "force" to emphasize the unwavering nature of the subject.