noun

1. The quality or state of being perfect or complete, so that nothing substandard remains; the highest attainable state or degree of excellence

   “The system runs to perfection.”

2. A quality, endowment, or acquirement completely excellent; an ideal; faultlessness; especially, the divine attribute of complete excellence.

Synonyms: faultlessness, flawlessness, impeccability, infallibility

verb

1. To perfect.