Noun: Courage and resolve; strength of character.
Verb: Clench (the teeth), especially in order to keep one's resolve when faced with an unpleasant or painful duty.
Resolve defined ...
Noun: Firm determination to do something.
Courage defined ...
Noun: Strength in the face of pain or grief.
Quitting defined ...
Noun: To give up or resign; stop, cease and discontinue; to stop trying, struggling, or the like; accept or acknowledge defeat.
Courage defined ...
Noun: Strength in the face of pain or grief.
Resolve defined ...
Noun: Firm determination to do something.
Grit defined ...
Noun: Courage and resolve; strength of character.
Verb: Clench (the teeth), especially in order to keep one's resolve when faced with an unpleasant or painful duty.