Oily/ˈɔɪli/ Definition 1 of 3Pro Tip 1/3Literal Meaning Use 'oily' to describe objects or surfaces where oil is visibly present. The mechanic's tools were oily. Pro Tip 2/3Negative Impression 'Oily' can suggest poor maintenance or excessive oil, often seen unfavorably. He apologized for the oily fingerprints on the document. Pro Tip 3/3Avoid Overuse Don't confuse 'oily' with 'moist' or 'wet'; 'oily' specifically indicates oil presence. Her skin wasn't just moist from the humidity; it was oily.