1. Dominant, predominant, paramount, preeminent describe something outstanding. Dominant describes something that is most influential or important: the dominant characteristics of monkeys. Predominant describes something that is dominant over all others, or is more widely prevalent: Curiosity is the predominant characteristic of monkeys. Paramount applies to something that is first in rank or order: Safety is of paramount importance. Preeminent applies to a prominence based on recognition of excellence: His work was of preeminent quality.

Did you mean codominant?