seniorness means seniority. Lexicurio rates it Sui generis — a strength score of 86 out of 100.
Etymology
From senior + -ness.
noun
- seniority“With the seniorness of the faculty also comes a downside, however. Altered State faculty members are used to being told they are very good; thus, their willingness to consider new teaching ideas like collaborative learning or learning communities is often lacking.”