Crossword clues for the word: KEYUP The word KEYUP has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for KEYUP Showing 1 to 9 of 9 results Clue(s) "Light a fire under, say" Energize Excite Get psyched Inspire excitement in Intensify Make excited Make psyched Raise in tone.