Crossword clues for the word: ACTIO The word ACTIO has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for ACTIO Showing 1 to 5 of 5 results Clue(s) "Deed, in Roman law" "Legal proceeding, at law" "Right, in Roman law." Deed: Latin Legal proceeding: Lat.