ULTRACLEAN Synonyms: 73 Similar and Opposite Words

ultraclean

adjective

Definition of ultraclean

as in spotless

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Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of ultraclean In this program, the ESA Web TV crew travel back to Turin, Italy, to talk to the teams and watch as new tests are being conducted with the rover’s Earth twin, Amalia, while the real rover remains carefully stored in an ultraclean room. — IEEE Spectrum, 17 Mar. 2023 They are made on gigantic, ultraclean factory room floors that can be seven stories tall and run the length of four football fields. — New York Times, 8 Apr. 2022 The chalk-size core will be stored in an ultraclean metallic tube, one of 38 samples that the rover eventually collects, with about 30 of those likely to be returned to Earth by later missions. — Paul Voosen, Science | AAAS, 21 July 2021 Recipharm is hiring around 65 workers and training them to work in the ultraclean conditions of its production lines. — Joseph Walker, WSJ, 19 Dec. 2020

Recent Examples of Synonyms for ultraclean

Adjective

Many have spotless payment histories, pay more in rent than a mortgage would cost and have shown financial resilience by building businesses or sustaining long-term gig careers.

— Efri Argaman, Forbes.com, 29 July 2026
The travel center, which is open 24 hours a day, 365 days a year, has developed a cult-like following and is best known for a cute mascot who often boasts about its spotless, award-winning restrooms.

— Natassia Paloma, USA Today, 25 July 2026

Definition of spotless

Adjective

Briceno recommends coating both sides of the brush, wiping away any excess, and making sure the bristles come to a clean edge before applying.

— Marci Robin, Allure, 24 July 2026
In some respects, our skies have gotten cleaner in the past few decades; average levels of fine particulate matter have been cut nearly in half since 2000.

— Daniel Engber, The Atlantic, 24 July 2026

Definition of clean

Adjective

Justine loves vintage, so the Mortons always look amazing, in clothing passed from generation to generation and kept in immaculate repair.

— Scott Westerfeld, PEOPLE, 19 July 2026
This finish is an example of his two-footedness, enabling him to play across the forward line, and the immaculate timing of his runs.

— Anantaajith Raghuraman, New York Times, 16 July 2026

Definition of immaculate

Adjective

The stainless set perfectly sears salmon skin, and gives a quick char to green beans or any other sautéed veggie without mushing up the interior.

— Julia Harrison, Architectural Digest, 20 July 2026
The kitchen’s a windowed galley with a pass-through and breakfast bar, plus plenty of storage and Bosch stainless-steel appliances.

— Matthew Sedacca, Curbed, 20 July 2026

Definition of stainless

Adjective

Keep your refrigerator spick-and-span by washing produce drawers with hot water and soap, and spraying all surfaces down with a disinfecting (but non-toxic and food-friendly) vinegar solution.

— Elizabeth Brownfield, Southern Living, 23 Apr. 2026
Watch ships cruise by from the balconies of spick-and-span rooms or while breaking a sweat in the pierside barrel saunas.

— Zoe Baillargeon, Travel + Leisure, 2 Mar. 2026

Definition of spick-and-span

Adjective

Traces of arecoline, a stimulant exclusively found in betel nuts, were present in all the reference samples and in three archaeological samples that came from the unstained teeth of a woman.

— Elizabeth Rayne, ArsTechnica, 19 Aug. 2025
The underlying regular paint should remain undamaged and unstained, although Glasst does advise testing Unpaint in one small area before applying it to a whole wall.

— Ben Coxworth, New Atlas, 10 Sep. 2024

Definition of unstained

Adjective

In other words, historical comparables suggest that Sherwood’s trade value probably isn’t cleanly at the level of him returning a first-round pick to Vancouver if he’s ultimately traded between now and March 6.

— Thomas Drance, New York Times, 6 Jan. 2026
Whoever wins cleanly leaves with both the championship belts.

— Matthew Couden, MSNBC Newsweek, 17 Sep. 2025

Definition of cleanly

Browse Nearby Words

ultrachic

ultraclean

ultracold

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“Ultraclean.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultraclean. Accessed 30 Jul. 2026.

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Synonyms of ultraclean

adjective

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