めんちゃいMeanings1expressionsorryabbreviationobsolete termObsolete abbreviation of ごめんちゃい, itself a childish or cute variant of ごめんなさい. Not used in modern Japanese.See also: ごめんちゃい昔むかしの漫まん画がで「めんちゃい」と謝あやまる子こどもが描えがかれていた。In an old manga, a child was depicted apologizing with 'menchai'.