Highest in quality, achievement, performance, etc.; most excellent
Having or being the greatest quantity or the highest degree that has been or can be attained:
The definition of superlative is expressing the very highest degree, or the very best example of something.
Selected with care; well-chosen:
The point on the celestial sphere that is directly above the observer (90 degrees above the celestial horizon ).
Approaching or constituting the maximum:
Used with the definite article and an implied noun: something that is worst.
Find another word for optimum. In this page you can discover 22 synonyms, antonyms, idiomatic expressions, and related words for optimum, like: excellent, best, optimal, supreme, select, maximum, superlative, choice, least, worst and poorest.