Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun longevity

2 senses of longevity

Sense 1
longevity, length of service -- (duration of service; "her longevity as a star"; "had unusual longevity in the company")
       => longness -- (duration as an extension)

Sense 2
longevity, seniority -- (the property of being long-lived)
       => oldness -- (the opposite of youngness)