みんなさんMeanings1nouneveryone; all; everybodyslangSlang variant of みなさん (皆さん). Used in casual speech, often with a friendly or informal tone. Not appropriate in formal settings.See also: 皆さん (みなさん)みんなさん、こんにちは!Hello, everyone!みんなさんに感かん謝しゃしています。I'm grateful to all of you.