1891, in reference to balloons, coinage based on inflate. Latin deflare meant "to blow away," but in the modern word the prefix is taken in the sense of "down." Related: Deflated; deflating.
例文
1. When it returns to shore,the life-jacket will deflate and revert to a harness.
岸に戻ると救命胴衣がしぼんで背帯状に回復する。
2.Like any actor he can be self-centred but I think I 've worked out how to deflate him.