Crossword clues for the word: ONI The word ONI has appeared as an answer to at least 61 crossword clues on different crossword puzzles. Crossword clues for ONI Showing 51 to 61 of 61 results Clue(s) Sailors' grp. Sea-based covert org. Secretive maritime org. Suffix for pepper The U.S. military's nautical version of the CIA U. S. Navy group: Abbr. U.S. maritime agcy. U.S. maritime spy agcy. U.S.N. division USN branch WWII translator of enemy communications « Previous Next » 1 2