second-class [only before noun]
considered to be less important and less valuable than other people:
Why should old people be treated like second-class citizens?
of a lower standard or quality than the best:
We will not accept a second-class education for our children.
tickets etc that are for cheaper, less comfortable seats on a train or ship
relating to the system of delivering mail in Britain that is cheaper and slower
used to describe a university degree in Britain that is good, but not the highest level: ➔ first class (3)
a second-class honours degree
—second class adverb:
He was travelling second class.