“Eponymous physicist Mach”

Here is the verified answer to the Wall Street Journal Crossword clue “Eponymous physicist Mach”, last seen on September 7, 2026.

Answer hidden — reveal below

E???T

A 5-letter down entry from the Monday puzzle

The Answer

ERNST

The answer to “Eponymous physicist Mach” is ERNST

Letters5

DirectionDown

PublishedSep 7, 2026

Letter analysis

The clue “Eponymous physicist Mach” appeared in the Wall Street Journal Crossword on Monday, September 7, 2026 as a down entry. The verified answer is ERNST — a 5-letter word that begins with E and ends with T.

This answer contains 1 vowel and 4 consonants. Click through any related clue below to keep solving, or open the full answer key for the day from the link above.

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Frequently Asked Questions

What is the answer to “Eponymous physicist Mach”?

The answer to the Wall Street Journal Crossword clue “Eponymous physicist Mach” is ERNST — a 5-letter down entry from the September 7, 2026 puzzle.

How many letters is the answer?

ERNST has 5 letters — 1 vowel and 4 consonants.

Are these answers official?

WSJCrosswordAnswers.org is an independent reference site, not affiliated with the Wall Street Journal. We solve and verify each puzzle by hand before publishing.