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Use "wait on" in a sentence
"Only the Arcadians sent reinforcements, but these made camp thirty miles away near Corinth to wait on events."
"She had already sent Kacey home sick—the poor girl had thrown up so much she could barely stand up, let alone wait on customers or unpack books for the bookshelves."
"Until you have been subjected to it, it is hard to fully appreciate the discouragement to travel that is the wait on a hard plastic seat for a short-term stamp in your Turkish passport."