Also, have a voice in. Have the right or power to influence or make a decision about something. For example, I want to have a say in this matter, or Citizens want to have a voice in their local government. [ c. 1600 ]
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have one's say. Express one's views, as in As soon as I've had my say I'll sit down. [ Late 1600s ]
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have the say. Be in command, as in The general has the say over which troops will be sent. [ Early 1800s ]