Big acronym in purifying filters

Latest answer — April 25, 2026

6 Down

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NYT Crossword

This clue's Saturday, April 25, 2026 appearance

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Across

  1. 1Showy insect with dark eyespots on its wings
  2. 7Land bordering the Sea of Azov
  3. 13Tired expression
  4. 14Start of an old request for advice
  5. 15Optional button while paying via app
  6. 16Image editor, informally?
  7. 17"The Rise of Skywalker" role
  8. 18What power tools should be designed for
  9. 20Curved shape
  10. 21"___ Mía" (2014 Latin pop hit)
  11. 23Suffix akin to -ess
  12. 24"There you have it!"
  13. 25Mobster's weapon
  14. 26Source of many an explosive news story
  15. 27Get one over on
  16. 28"So that's how it's gonna be, I guess"
  17. 31Air traveler's connection
  18. 32Helpful pointer, say?
  19. 33Indigenous land, informally
  20. 34Drink from a small cup
  21. 35War of 1812 treaty locale
  22. 39Dwindle
  23. 40Feminist writer ___ Mae Brown
  24. 42Apple or orange, e.g.
  25. 43Gambling site, in brief
  26. 44Heart of downtown
  27. 47Oregon senator Wyden
  28. 48One of the B vitamins
  29. 50Sore spots for gardeners, perhaps
  30. 52Spider-Man foe with metal "tentacles," familiarly
  31. 53Driving necessity
  32. 54Down-low joints
  33. 55Gently suggests, as an idea

Down

  1. 1"You've got a friend in me"
  2. 2"Kids these days ..." speakers
  3. 3Focus of an employee's first semiannual check-in, perhaps
  4. 4When a "sports equinox" (in which all four major U.S. leagues have games) typically occurs: Abbr.
  5. 5The thing here
  6. 6Big acronym in purifying filters
  7. 7Quit
  8. 8"As men in ___ strike those that wish them best": Iago
  9. 9Choler
  10. 10Guy's carryall
  11. 11Make secret, in a way
  12. 12"Moving on ..."
  13. 14Often-regretted behavior on social media, once
  14. 16Conclusion of three men's World Cup finals
  15. 19Be validated for vocalizing one's opinion
  16. 22Give designs to
  17. 24"West Side Story" song that precedes the rumble
  18. 26Big name in hosiery
  19. 27Cloud up
  20. 28Word on either side of "à"
  21. 29Big accomplishment, so to speak
  22. 30Kept under wraps
  23. 36Book boo-boos
  24. 37Creature of the internet
  25. 38Columns on a language learner's conjugation chart
  26. 39Actress honored with a SAG Lifetime Achievement Award in 2025
  27. 41Consumed, quaintly
  28. 44Computer store purchases
  29. 45Signs
  30. 46Give a hoot?
  31. 49Cathcart's rank in "Catch-22": Abbr.
  32. 51Big cheese with bread, for short

The answer to “Big acronym in purifying filters” in the New York Times crossword is HEPA — a 4-letter word. It most recently appeared in the New York Times crossword on April 25, 2026, a Saturday puzzle, at 6-Down, and it has also run on 2 earlier dates with the same answer. Below you'll find why that fill fits, every other answer we've recorded for this clue, and links into the puzzle it came from.

“Big acronym in purifying filters” answer

HEPA (4 letters)

Reveal the solution one letter at a time with the tiles above if you'd rather nudge yourself toward it than see the whole word at once. Just want it outright? The answer is HEPA.

Why the answer is HEPA

HEPA is the 4-letter solution that fits "Big acronym in purifying filters" in the NYT Crossword crossword on April 25, 2026 (6-Down). Use the letter tiles above if you'd rather reveal it one letter at a time.

When else has “Big acronym in purifying filters” appeared?

New York Times reuses clues across dates, sometimes with a different answer depending on the grid. Here's where this exact clue has shown up, and what the answer was each time — handy when you're checking whether today's fill is the only one.

Frequently asked questions

What is the answer to “Big acronym in purifying filters”?

The answer is HEPA, a 4-letter word. It most recently appeared in the New York Times crossword on April 25, 2026.

How many letters is the answer to “Big acronym in purifying filters”?

4 letters: HEPA.

When did this clue appear?

Most recently in the New York Times crossword on April 25, 2026 (a Saturday puzzle), at 6-Down. Earlier appearances: August 2, 2025 → HEPA; January 31, 2025 → HEPA.

Can “Big acronym in purifying filters” have a different answer?

Yes — New York Times sometimes reuses a clue with a different solution to fit the grid. The answers we've recorded for each date it appeared are listed above when available.

Where can I find the rest of this day's NYT Crossword answers?

The full grid for April 25, 2026 is on the NYT Crossword answers page, with every clue and answer from that puzzle.

New York Times Crossword is published by The New York Times; WordHint is an independent site and is not affiliated with or endorsed by the publisher.

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