This clue appeared in the Mini Crossword on Tuesday, June 16, 2026 (1 Down) and the NYT Crossword on Monday, December 1, 2025 (1 Down). The answer is hidden below until you want it.
How to read this clue
This is a fill-in-the-blank clue: the answer completes the phrase, title or quotation.
Mini Crossword, June 16, 2026, 1 Down
Answer length: 4 squares
First letter
M _ _ _
First and last letters
M _ _ H
Show the answer
About the answer
MACH as a word: (physics, uncountable) A ratio of the speed (of an object, etc.) to the speed of sound in the fluid or other medium through which the object travels. Usually...; Ernst Mach, Austrian physicist (1838, 1916), born in Moravia (now Czech Republic).
MACH has been an answer 2 times in the NYT Crossword and Mini since December 1, 2025.
NYT Crossword, December 1, 2025, 1 Down
Answer length: 4 squares
First letter
M _ _ _
First and last letters
M _ _ H
Show the answer
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