This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. superlative form of greasy: most greasy.

"His whole brand is built around the proposition that he's a world expert on human rights, nationalism, and the perils and prospects of liberal interventionism, but whenever someone asks him his opinion on a specific case, Ignatieff slips and slides like the greasiest city hall politico."