Jilt

Part of speech: noun (n.)

A woman who capriciously deceives her lover; a coquette; a flirt. Otway.

Part of speech: verb (v.)

To cast off capriciously or unfeeling, as a lover; to deceive in love. Locke.

Part of speech: verb (v.)

To play the jilt; to practice deception in love; to discard lovers capriciously. Congreve.