deflate
v.
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.
〔李〕[de-;flat;-e] v.放气； 削减（价格）； 紧缩（通货） ←flat [ L flare]=to blow 吹
〔蒋〕[de-取消，非，相反，flat吹;’与吹入气体相反”→排除气体，抽掉气体，放气] 使缩小，使瘪下去，紧缩(通货)