Sentence:  Obviously <WSD>hydrophobic</WSD> ( oleophilic ) substances such as greases , oils , or particles having a greasy or oily surface are more at home in the center of a micelle than in the aqueous phase . 
Meaning of the word marked with <WSD> tags:  lacking affinity for water; tending to repel and not absorb water; tending not to dissolve in or mix with or be wetted by water