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English definition of “may”

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may

modal verb  /meɪ/ ( present tense may, past tense might  /mɑɪt/) us  

may modal verb (POSSIBILITY)

used to express possibility: She said she may decide to accept the job offer and may not.

may modal verb (PERMISSION)

used to ask or give permission: May I use your telephone?

may modal verb (SUGGESTION)

used to make a suggestion or suggest a possibility in a polite way: You may want to have a bite to eat before you leave.
(Definition of may modal verb from the Cambridge Academic Content Dictionary © Cambridge University Press)
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