失算 Traditional form: 失算 Pinyin (reading): shīsuàn Definitions: to miscalculate; to misjudge Characters: 失 - to lose; to make a mistake, to neglect 算 - to calculate, to count; to figure, to plan Traditional characters: 失 - to lose; to make a mistake, to neglect 算 - to calculate, to count; to figure, to plan