drop away
verb1
To become less or fewer.
- Eustace gaped at him in amazement. When his urbanity dropped away from him, as now, he had an innocence of expression which was almost infantile. It was as if the world had never touched him at all.1963, Margery Allingham, chapter 9, in The China Governess: A Mystery, London: Chatto & Windus, →OCLC: