The phrase "utmost degree" means the highest level of something. It can be used to describe a feeling, quality, or any other attribute that has reached an extreme level. Its synonyms include words such as maximum, highest, greatest, pinnacle, apex, climax, topmost, and the like. These words convey the sense of something that has reached its ultimate point and cannot be surpassed. They are often used to describe achievements, performances, or capabilities that have been taken to their extreme limits. In summary, the phrase "utmost degree" has many synonyms that can be used interchangeably to describe something that has been taken to the highest possible level.