“Dally,” from the Old French “dalier,” meaning “to chat,” has two different meanings that are usually distinguished by the preposition that accompanies the primary term. “To dally over” means to procrastinate or take your time on something. You might dally over a cup of coffee with a friend, or you could dally over a painting project, wanting to get it just right. “To dally with” is usually used in a romantic context. It implies engaging in a casual relationship or playful romantic interactions.