“Sub system”

Here is the verified answer to the Wall Street Journal Crossword clue “Sub system”, last seen on July 31, 2026.

Answer hidden — reveal below

S???R

A 5-letter down entry from the Friday puzzle

The Answer

SONAR

The answer to “Sub system” is SONAR

Letters5

DirectionDown

PublishedJul 31, 2026

Letter analysis

The clue “Sub system” appeared in the Wall Street Journal Crossword on Friday, July 31, 2026 as a down entry. The verified answer is SONAR — a 5-letter word that begins with S and ends with R.

This answer contains 2 vowels and 3 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 “Sub system”?

The answer to the Wall Street Journal Crossword clue “Sub system” is SONAR — a 5-letter down entry from the July 31, 2026 puzzle.

How many letters is the answer?

SONAR has 5 letters — 2 vowels and 3 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.