This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Someone who flatters excessively

"The set-up: Following a seminar on office ethics, where the employees were informed that time spent not working is akin to stealing from the company, Jim is documenting every second uber-suckup Dwight doesn't spend working."

fuckup