Definitions:

1. After everything has been considered or completed. ADVERB
   • All arguments ultimately came down to personal values.
2. In the end; finally. ADVERB
   • She ultimately decided to pursue a career in medicine.
3. Indicating the most important action. ADVERB
   • Ultimately, he will have to make a decision before the end of the week.
4. Refers to the final result or conclusion of a certain process or period of time. ADVERB
   • Ultimately, the choice is yours to make.

Synonyms:

• after all
• at last
• at long last
• eventually
• finally
• in the end