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To be so full that the contents of something spill into something else. The drainage ditch behind our house overflowed into our back yard after that huge rainstorm. The waiter wasn't paying attention when he was pouring my drink, and it started overflowing into my plate of food.
1. To be so filled with something that the contents spill out over the edge of the container. The river overflowed with water during the rainstorm. Why would they serve you a bowl overflowing with soup? That's just impractical!
2. To have an abundance of something, especially an emotion or characteristic, such that it seems like someone or something can't contain it. She was overflowing with excitement on the morning of her performance. My inbox has been overflowing with congratulations following the premiere of our film.
overflow into something
to spill over into something. The river overflowed into the surrounding farmland. The water in the bowl overflowed into the sink.
overflow with someone or something
to have so much or so many people or things that they spill over. The kitchen overflowed with the guests. My cup overflowed with coffee and spilled on the counter.
1. To be filled beyond capacity with something: Their mugs overflowed with beer.
2. To have a boundless supply of something: The hospital room overflowed with flowers. Our wonderful hosts were overflowing with generosity to us.