He delighted people with his charm and 'ease' of manner. [=his relaxed and easy manner]
The students might respond better if the teacher 'eased up on' them a little.
These features can be modified 'with the greatest of ease'. [=very easily]
(..) I will end you. I will fuckin' end you. Got that, chief? - Time's up. - Yeah. At ease, gentlemen. You okay? Look, I'll, I'll understand if you don't wanna meet with him again. Thursday, . Make sure the kid's here. (..)1997 Good Will Hunting