Crossword clues for the word: ULTRASONIC The word ULTRASONIC has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for ULTRASONIC Showing 1 to 7 of 7 results Clue(s) Beyond human hearing In mid-April, a locust flies too high to be heard Radical junior in charge too high to catch? Too high for people to catch? Too high to catch? Top Seattle cager? Unheard frequencies