Answer:

We have spotted XKCD (4 Letters) a total of 3 times in our database. Below you may see the clues associated with XKCD and also when and where was it last seen:

Referring crossword puzzle clues

Usage among publishers:

  • New York Times: Dec 11, 2025
  • LA Times: Feb 3, 2024
  • LA Times: Mar 8, 2023