まい

probably isn't (doesn't, won't, etc.)

Also:counter for portions of gyōza or soba, counter for wrestlers of a particular rank, counter for fields or rice paddies

AuxiliaryJLPT N2

What does まい mean?

まい is a Japanese auxiliary meaning probably isn't (doesn't, won't, etc.) in English. It can also be translated as counter for portions of gyōza or soba, counter for wrestlers of a particular rank, counter for fields or rice paddies depending on context. It is written as まい in hiragana, and mai in romaji. This word is part of JLPT N2 vocabulary.