1. most extreme; greatest possible
2. farthest; most distant

1. the greatest or most extreme extent or degree

Examples

• She pushed herself to the uttermost limits of endurance.
• The explorers reached the uttermost regions of the Arctic.
• He gave his uttermost effort to complete the project on time.
• The castle stood at the uttermost edge of the cliff.
• They traveled to the uttermost corners of the earth.
• She would do her uttermost to help her friend.
• The uttermost importance of this decision cannot be overstated.