Crossword clues for Hint at. 9 letters:
- LEFTRIGHT
- Repeated words in a drill sergeant's marching order, and a hint to how the first and second word, in turn, of each starred answer would be touch-typed
- SPACETIME
- Major subject for 20- and 55-Across, or a hint to interpreting several squares in this puzzle
- YOUYOUYOU
- *Whom "I'm in love with" in an Ames Brothers song, and a hint to what the answers to starred clues contain
- GREATWALL
- Landmark that, in a way, is a border feature of this puzzle and a hint to what's missing from 10 answers
- BETADECAY
- Process by which an element's atomic number may be reduced, and a hint to this puzzle's theme