शक्ति
shakti
Strength means being strong or having power. It can be about muscles, but it can also mean being brave or having good character.
You say 'strength' like this: str-engk-th. It has a strong 'str' sound at the beginning.
The word 'strength' comes from an old English word 'strengð', which means power or force.
The word 'strength' in Kannada is 'ಶಕ್ತಿ' (Shakti).