not move a muscle - to remain perfectly motionless I was told to not move a muscle while the dentist was working on my teeth. not much of (something) - to be rather bad, to be not so good It is not much of a hotel but I think that it will be okay for one night. not on your life - definitely not "May I borrow your car?" "Not on your life." not one iota - not even a tiny bit There is not one iota of truth in what that man is saying about me. not one's place - not one's role to do something It is.
