Capable of or characterized by a high or excellent level of performance or efficiency.
Characterized by a level of performance or efficiency that is adequate for or exceeds the expectations of end users.
Of or relating to performance.
Possessing adequate talents or accomplishments; of competent power or ability; qualified; fit.
Of a type or kind that suffices, that satisfies requirements or needs.
A quantity (of something) that is as large as is needed.
An adequate quantity of; enough.