Crossword clues for the word: ACTIVATE The word ACTIVATE has appeared as an answer to at least 10 crossword clues on different crossword puzzles. Crossword clues for ACTIVATE Showing 1 to 10 of 10 results Clue(s) Call up, as reservists Cause to function Make usable, as a credit card Set (machine) in motion Set in motion Start to vacate it Start to vacate it, possibly Switch on Trigger Turn on