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

2 senses of seniority

Sense 1
seniority, senior status, higher status, higher rank -- (higher rank than that of others especially by reason of longer service)
       => high status -- (a position of superior status)

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