Socially vague, like an unemployed teacher (9)
I believe the answer is:
classless
'like an unemployed teacher' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for classless that I've seen before include "Society of socialist ideal" , "lacking social order" , "like an unemployed teacher" , "having no social distinctions" , "Lacking distinction" .)