“strength”

Courage and resilience in the face of pain, adversity, or prolonged hardship.

“She climbed the final mile on sheer fortitude alone, her legs long past exhaustion.”

Best for: Works well in formal writing, speeches, or moments of emotional endurance.

Raw physical or figurative power, often implying tough, fibrous resilience.

“The old boxer still had the sinew of a man who had never once stopped fighting.”

Best for: Vivid and visceral; ideal for gritty fiction or athletic writing.

Great power or might, especially of a commanding or sovereign nature.

“The empire expanded on the puissance of its legions and the will of one ambitious emperor.”

Best for: Best in historical, epic, or poetic contexts; sounds archaic and grand.

Raw muscular power, especially of the physical body.

“He didn't win with strategy — he won with sheer, undeniable brawn.”

Best for: Casual and punchy; suits sports writing, action scenes, or contrast with intellect.

The quality of being dependably strong, resolute, and unwavering under pressure.

“Her stalwartness during the crisis kept the entire team from falling apart.”

Best for: Slightly formal; emphasizes reliability and moral toughness over physical power.

A rare term for vigorous vital force or the green, blooming strength of living things.

“There was a viridity in his ambition that no failure had yet managed to wilt.”

Best for: Extremely rare and poetic; best in experimental or highly literary writing.