Crossword clues for the word: FALLIN The word FALLIN has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for FALLIN Showing 1 to 8 of 8 results Clue(s) ___ with: become acquainted Begin to associate (with) Boot camp order Corporal's command. Drill sergeant's order Join the formation N.C.O.'s order Order to soldiers