Hydrophobic

https://biologydictionary.net/hydrophobic/ 

Hydrophobic Definition

Hydrophobic literally means “the fear of water”. Hydrophobic molecules and surfaces repel water. Hydrophobic liquids, such as oil, will separate from water. 

Hydrophobic molecules are usually nonpolar, meaning the atoms that make the molecule do not produce a static electric field.

In polar molecules these opposite regions of electrical energy attract to water molecules. Without opposite electrical charges on the molecules, water cannot form hydrogen bonds with the molecules. The water molecules then form more hydrogen bonds with themselves and the nonpolar molecules clump together.