Gutty (adjective)

1. Having or showing courage and determination.
2. Showing grit and determination.

Origin:

The word "gutty" comes from the word "gut" which means "the stomach or the intestinal tract of a person or animal.".

Examples:

1. He was gutty enough to take on the challenge.
2. She showed gutty determination to finish the race.
3. The team had a gutty performance in the game.
4. The player had a gutty attitude on the field.
5. He was gutty enough to ask for a raise.