Crossword clues for the word: CASUS The word CASUS has appeared as an answer to at least 9 crossword clues on different crossword puzzles. Crossword clues for CASUS Showing 1 to 9 of 9 results Clue(s) __ belli: act of war ___ belli (cause for war) ___ belli (cause of war) ___ belli (event which leads to war): Lat. ___ belli (war starter) ___ belli (war-provoking act) ___ belli. """___ belli"" (justification for war)" Event: Lat.