What does "juniority" mean?

The quality or state of being junior.

What is a synonym for "juniority"?

Common synonyms include: back seat, greenness, humility, immaturity, inexperience, infancy.

noun

noun ·Rare ·Advanced level

Noun

1
The quality or state of being junior. countable, uncountable
"Had a vast knowledge of the aboriginal tribes; was, in spite of his juniority, the greatest authority on the aboriginal Gullals."

"Had a vast knowledge of the aboriginal tribes; was, in spite of his juniority, the greatest authority on the aboriginal Gullals."

From junior + -ity.