___ 1 (speed of sound) Crossword Clue
4 letters · New York Times · Monday, December 1, 2025 · 1-Down
Appeared in 1 New York Times Crossword: Monday, December 1, 2025.
Exact puzzle match · New York Times · December 1, 2025 · 1-Down · 4 letters
MACH0 of 4 letters revealed
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