seniority

n. /ˌsiː.njɔːr.ə.t̬i/ C1

资历；资深；年长

The state of being higher in rank or older in service.

仙境例句

By seniority the Dormouse should have poured the tea, for he was the oldest; but he was asleep.

论资历，该由睡鼠倒茶，因为他年纪最大；可他睡着了。