Single-minded (adjective)

1. Having or showing a single-minded determination to achieve a goal.
2. Having or showing a focused and determined attention to a particular thing.

Origin:

The word is formed by combining the adjective single and the noun minded indicating that the focus or attention of a person is only on one thing. .

Examples:

1. He was single-minded in his pursuit of success.
2. She was so single-minded that she ignored the needs of her family.
3. He was a single-minded student, focused solely on his studies.
4. His single-minded dedication to his work paid off in the end.
5. She had a single-minded determination to finish the race.