(modal auxiliary verb, defective) To have permission to, be allowed. Used in granting permission and in questions to make polite requests. Example: you may smoke outside;Â may I sit there?
(modal auxiliary verb, defective) Expressing a present possibility; possibly. Example: he may be lying; Schrödinger's cat may or may not be in the box
(subjunctive present, defective) Expressing a wish (with present subjunctive effect). Example: may you win;  may the weather be sunny
Used in modesty, courtesy, or concession, or to soften a question or remark.
All clues having "MAY"
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You can find a list of possible crossword clues for MAY below.
Crossword Answers