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 There was no shortage of high-octane sensuality, albeit pared down using nudes, champagne and pastels, including baby pink. — Martino Carrera, Footwear News, 28 Sep. 2026 Playing in Buster Faulkner’s high-octane attack, Brown has thrived. — Edgar Thompson, The Orlando Sentinel, 24 Sep. 2026 But Mensah finished the game going 6 of 10 for just 7 yards after throwing for 213 yards during his record-setting completion run that, to that point, allowed Miami’s high-octane offense to keep humming. — Jordan McPherson, Miami Herald, 19 Sep. 2026 The late designer spent more than six decades defining high-octane glamour. — Amanda Le, InStyle, 14 Sep. 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

Because the richest tenth of Americans own nearly 90% of household stock-market wealth, every dollar shifted from paychecks to profit flows almost undiluted to the top.

— Christopher Marquis, Time, 16 Oct. 2026
The closing look circled back to the same idea, but this time the same model carried the bag with a black skirt suit, the most undiluted iteration of Chanel.

— José Criales-Unzueta, Vanity Fair, 9 Oct. 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 20 Oct. 2026.

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Synonyms of high-octane

adjective

Example Sentences

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