HIGH-OCTANE Synonyms: 30 Similar and Opposite Words

high-octane

adjective

Definition of high-octane

as in high-test

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Example Sentences

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 high-octane In the ninth, the Athletics’ high-octane offense made up for being surprisingly quiet on Tuesday and Wednesday. — Justice Delos Santos, Mercury News, 25 June 2026 Saturday, July 4 Family fun and high-octane races are marking the Fourth of July in Placerville. — Camila Pedrosa july 2, Sacbee.com, 2 July 2026 Stellar industrial design, premium build quality, and high-octane silicon make this a top choice, especially for this price with $315 knocked off! — K. Thor Jensen, PC Magazine, 26 June 2026 Senegal's national football team, crowned African Nations champion thanks to its victory over Morocco on January 18 in Rabat after a high-octane final, landed late on January 19 night back home, where it was warmly welcomed off the plane by the Senegalese head of state and his government. — Tim Genske, Forbes.com, 26 June 2026 See All Example Sentences for high-octane

Recent Examples of Synonyms for high-octane

Adjective

The graduation ceremony and the reception afterward are cute and heartwarming for the grown-ups, bittersweet and mortifying for the kids, who skive off to smoke some of Ed’s high-test weed and have a little Texas Forever moment, toasting their enduring friendships.

— Sophie Brookover, Vulture, 27 Mar. 2026
Unlike many rocket engines used for hypersonic vehicles, the Draper engine runs on high-test hydrogen peroxide and kerosene.

— New Atlas, New Atlas, 25 Feb. 2026

Definition of high-test

Adjective

Don’t use undiluted vinegar since its acidity can damage outer frames or other surfaces near the glass.

— Karen Brewer Grossman, Southern Living, 19 June 2026
Carpenter’s spare slasher is remarkable for its restraint and its fusion of popcorn suspense with pure, undiluted terror.

— Declan Gallagher, Entertainment Weekly, 9 June 2026

Definition of undiluted

Adjective

Sellke, Shi, and Wang then showed that after a certain number of shuffles (which depended on how many cards were in the deck), the overlap between the decks’ regions of unmixed cards disappeared at an exponential rate.

— John Pavlus, Quanta Magazine, 17 June 2026
Baking the cake unmixed creates a deliciously gooey cake that is crumbly and buttery on top.

— Melinda Salchert, Southern Living, 3 Oct. 2025

Definition of unmixed

Browse Nearby Words

high noons

high-octane

high-pitched

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“High-octane.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/high-octane. Accessed 8 Jul. 2026.

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Synonyms of high-octane

adjective

Example Sentences

Browse Nearby Words

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