レモン水すいレモンすいMeanings1nounlemon waterPlain water with lemon juice or slices, typically unsweetened.朝あさ起おきたら、まずレモン水すいを飲のむようにしている。I make it a habit to drink lemon water first thing in the morning.2nounlemonadeSweetened lemon drink; often used interchangeably with レモネード, though レモン水 can also refer to homemade or less sweet versions.See also: レモネード