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]
(..) Say not that he has fallen. They were outnumbered. None survived. Fear The city is rank with it. Let us ease their pain. Release the prisoners. Catapults! Shields up! My sons are spent. My line has ended. (..)2003 The Lord of the Rings: The Return of the King
(..) A broil of fume he sends ahead of his host. The Orcs of Mordor have no love of daylight... ...so he covers the face of the sun... ...to ease their passage along the road to war. When the Shadow of Mordor reaches this city... ...it will begin. Well... (..)2003 The Lord of the Rings: The Return of the King