low-octane

adjective

Having a low octane number.

Opposite
high-octane
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Meanings

adjectivelow-octane (comparative lower-octane, superlative lowest-octane)

comparative lower-octane · superlative lowest-octane

  1. Having a low octane number.

    Low-octane fuel can be a cause of preignition and detonation. If combustion begins before the spark, for example, combustion pressures may try to push the piston backwards at the end of the compression stroke.

    2004, Elisabeth H. Dorries, TechOne: Automotive Engine Repair, Cengage Learning, →ISBN, page 58

    Antonyms: high-octane

  2. broadlySlow; weak.

    A low-octane French attempt to channel the spirit of Play It Again Sam. Alice Taglioni is a single thirtysomething holding out for Mr Right, while looking to a Woody Allen poster for advice.

    2013 July 4, Andrew Pulver, “Paris-Manhattan – review”, in The Guardian

    Antonyms: high-octane

Synonyms & antonyms

adjectiveHaving a low octane number.

Opposite
high-octane

adjectiveSlow; weak.

Opposite
high-octane
Cite this entry
APA

low-octane. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/low-octane

MLA

“low-octane.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/low-octane. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “low-octane,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/low-octane.

Source: low-octane on Wiktionary, CC BY-SA 4.0.