ULTRACLEAN Synonyms: 73 Similar and Opposite Words

ultraclean

adjective

Definition of ultraclean

as in spotless

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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

Suite attendants - this line doesn’t offer butler service - kept accommodations spotless.

— Condé Nast, Condé Nast Traveler, 9 Sep. 2026
The boat falls into a sewer, and, as the boy goes to retrieve it, a face appears out of darkness—a clown, with spotless, uncanny white skin, a bulbous red nose, and untamed red hair.

— Literary Hub, Literary Hub, 28 Aug. 2026

Definition of spotless

Adjective

While the 49ers beat the Rams 27-7, Eagle worked like a strong nose tackle in Kuechly’s playing days, taking care of the blockers to let a linebacker have clean lanes to make tackles.

— Andrew Marchand, New York Times, 11 Sep. 2026
The only men were the mayor, the three members of town council, the priest from the Catholic church, Father Michael, and the reverend from the Baptist church, as well as a man with a balding head and a full moustache, his suit pressed and clean.

— Literary Hub, Literary Hub, 11 Sep. 2026

Definition of clean

Adjective

His carefully coiffed side parting is as immaculate as his smile, something that distinguishes him from the rest of his party, whose members tend to grimace rather than grin.

— Esme Nicholson, NPR, 6 Sep. 2026
That said, the surfaces are immaculate with Englert, serving as both co-director and cinematographer, moving through the Dostoevskys’ decline with astonishing care.

— Alison Foreman, IndieWire, 5 Sep. 2026

Definition of immaculate

Adjective

The OmiePod is a fork and spoon set, complete with a carrying case that loops around the bento’s handle; PlanetBox features a stainless-steel set with a silicone case; and Bentgo has two different sets.

— Melissa Knific, Bon Appetit Magazine, 4 Sep. 2026
Nearby, the kitchen is outfitted with a large island, a marble backsplash, and high-end, stainless-steel appliances.

— Tori Latham, Robb Report, 3 Sep. 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 13 Sep. 2026.

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Synonyms of ultraclean

adjective

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