Overcup oak is a type of oak tree that is native to North America. It is a deciduous tree that is known for its durable and strong wood, as well as its acorns that are an important source of food for wildlife. If you're looking for synonyms for the word "overcup oak," there are a few different phrases that you might find useful. For example, you could refer to it as the Quercus lyrata, which is the scientific name for this species of oak. Other synonyms might include the swamp post oak, the water white oak, the basket oak, or the swamp white oak, depending on the specific characteristics of the tree you are describing.