Mayest meaning : To be strong; to have power (over). (auxiliary) To be able; can. To be able to go. (modal auxiliary verb, defective) To have permission to, be allowed. Used in granting permission and in questions to make polite requests. (modal auxiliary verb, defective) Expressing a present possibility; possibly. (subjunctive present, defective) Expressing a wish (with present subjunctive effect). Used in modesty, courtesy, or concession, or to soften a question or remark. To gather may, or flowers in general. To celebrate May Day.