It basically mean a person that is shy or uncomfortable in social settings. They're the quiet ones, the reserved ones, the one that doesn't get noticed a lot and that is the way they seem to like it.
He is doing well keeping quiet, he is a very Private person, does not like a lot of confusion, very polite young.
Yes, but they're also quiet and private.
tell him to please be quiet
a quiet singin person
Sneaky Nosy Smart Quiet
A person doesn't become autistic and being quiet doesn't make someone autistic - a person is born autistic.
When an annoying person that wont stop talking is quiet.
introvert
say be quiet
you have a microphone
quiet