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“Sierra Club cofounder”

The verified answer to the Newsday Crossword clue “Sierra Club cofounder”, with letter-by-letter analysis and the full puzzle context for the Sunday, April 27, 2025 puzzle.

Published · Down · 4 letters

Hints first

Letters 4
First letter M
Last letter R
M ? ? R

A 4-letter down entry from the Sunday puzzle

The Answer

M U I R

The answer to “Sierra Club cofounder” is MUIR

Letters 4
Direction Down
Published Apr 27, 2025

Letter analysis: the 4-letter answer

Vowels, consonants, and crossword construction notes
Unique 4 of 4 positions
Vowels 2 50% of word
Consonants 2 non-vowels
First letter M starts with

The clue “Sierra Club cofounder” appeared in the Newsday Crossword on Sunday, April 27, 2025 as a down entry. The verified answer is MUIR — a 4-letter word that begins with M and ends with R.

This answer contains 2 vowels and 2 consonants. The Newsday Crossword is published daily by Newsday on Long Island and edited by Stan Newman, whose Saturday Stumper is widely considered one of the toughest mainstream crosswords in print.

Other clues with the answer MUIR

MUIR has been used as the answer for these Newsday Crossword clues

More clues from the April 27, 2025 puzzle

Sunday Newsday Crossword
View full puzzle
"The results __" 5 ℓ · D Overly nervous 6 ℓ · D Bausch's partner 4 ℓ · D Baby in a barn 4 ℓ · A Request for a ride 9 ℓ · D Luster 5 ℓ · D Country singer Rimes 5 ℓ · D Send a text message to 4 ℓ · D Feel concern 4 ℓ · A Sounds of weariness 5 ℓ · A Chess strategy study 7 ℓ · D Rink leap 4 ℓ · D UN workers' agency 3 ℓ · D Satisfied 9 ℓ · D Former money of Milan 4 ℓ · D Run a reunion 4 ℓ · D Opinion survey 4 ℓ · A Nasal appraisal 4 ℓ · D Oceanfront attraction 7 ℓ · D Historical object 5 ℓ · D

Frequently asked questions about “Sierra Club cofounder”

What is the answer to “Sierra Club cofounder” in the Newsday Crossword?

The verified answer is MUIR — a 4-letter word that appeared as a down entry on Sunday, April 27, 2025.

How many letters is the answer to “Sierra Club cofounder”?

The answer MUIR contains 4 letters.

Was “Sierra Club cofounder” an across or down clue?

This clue ran as a Down entry.

Is this site affiliated with Newsday?

No. This is an independent fan reference site — we are not affiliated with Newsday. The Newsday Crossword is a trademark of its respective owner. We solve and verify each Newsday Crossword puzzle manually before publishing the answer key.

Sierra Club cofounder — Newsday Crossword Clue Answer | Newsday Crossword Answers