oldness the quality of being old; the opposite of newness
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= antonym
= relatert ord
Wiktionary
Substantiv
Seniority -
A measure of the amount of time a person has been a member of an organization, as compared to other members, and with an eye towards awarding privileges to those who have been members longer.
Wikipedia
Seniority is the concept of a person or group of people being in charge or in command of another person or group. This control is often granted to the senior person(s) due to experience or length of service in a given position, but it is not uncommon for a senior person(s) to have less experience or length of service than their subordinates; the knowledge or skill that one obtains after a certain amount of experience.