水すい損そんMeanings1nounflood damagearchaicArchaic term for damage caused by flooding. Modern Japanese typically uses 水害 (すいがい) instead.See also: 水害古こ文ぶん書しょには「水すい損そんにより田た畑はたが荒あれた」と記しるされている。An old document records that 'the fields were devastated by flood damage.'