Synonyms of tenuous
1
a
: having little substance or strength : flimsy, weak
tenuous influences
b
: shaky sense 2a
tenuous reasons
2
: not thick : slender
a tenuous rope
3
: not dense : rare
a tenuous fluid
tenuously adverb
tenuousness noun

Did you know?

Lean into the history of tenuous and you’ll find that the word comes to English from the Latin adjective tenuis, meaning “fine-drawn, thin, narrow, or slight,” and is a relative of thin. Like that more familiar word, tenuous has a wide array of meanings: it can describe a literal thinness, as in “a silkworm’s tenuous threads,” or rarity (the opposite of density), as in “a tenuous fluid,” or it can describe things that are figuratively thin or flimsy. If one team in a game has a tenuous lead, either team still has a chance at winning. If there is only a tenuous connection between two events, those events are likely unrelated.

Choose the Right Synonym for tenuous

thin, slender, slim, slight, tenuous mean not thick, broad, abundant, or dense.

thin implies comparatively little extension between surfaces or in diameter, or it may imply lack of substance, richness, or abundance.

thin wire
a thin soup

slender implies leanness or spareness often with grace and good proportion.

the slender legs of a Sheraton chair

slim applies to slenderness that suggests fragility or scantiness.

a slim volume of poetry
a slim chance

slight implies smallness as well as thinness.

a slight build

tenuous implies extreme thinness, sheerness, or lack of substance and firmness.

a tenuous thread

Examples of tenuous in a Sentence

What is also true is that they, and I, were lucky, through genes or fate, to surge through the maelstrom of dashed hope and denied opportunity to grasp a tenuous piece of the American Dream. —Anthony Walton, Lure and Loathing, 1993
After the end of the crusading period, however relations between East and West had grown tenuous … —Albert Hourani, Islam in European Thought, 1991
The authors follow researchers as they use the slimmest leads and the most tenuous connections to track the genes for Huntington's disease, muscular dystrophy, schizophrenia and a host of other physical and mental miseries. —Natalie Angier, New York Times Book Review, 12 Aug. 1990
He has a tenuous grasp on reality. The local theater has had a tenuous existence in recent years. He could demonstrate only a tenuous claim to ownership.
Recent Examples on the Web
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.
In an already tenuous industry marked by razor-thin margins, high rents and increasing costs for goods and labor, some of the Southland’s favorite beach bars and restaurants are dumping out buckets of water this month. — Stephanie Breijo, Los Angeles Times, 29 Oct. 2026 Diversity programs requiring applicants to come from certain racial or ethnic groups have long been on legally tenuous ground, but the nail in the coffin came in 2023 when the Supreme Court struck down race-conscious admissions in colleges. — Winston Cho, HollywoodReporter, 27 Oct. 2026 Idefix, the size of a large shoebox, will attempt to drive around Phobos for up to 100 days while grappling with the moon’s rough topography and tenuous gravity, less than one-thousandth that of Earth’s. — Stephen Clark, ArsTechnica, 20 Oct. 2026 This has left the job security for both Rutgers' Greg Schiano and Maryland's Mike Locksley as tenuous at best. — ABC News, 16 Oct. 2026 See All Example Sentences for tenuous

Word History

Etymology

Latin tenuis "fine-drawn, thin, narrow, slight" + -ous — more at thin entry 1

First Known Use

1597, in the meaning defined at sense 3

Time Traveler
The first known use of tenuous was in 1597

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Cite this Entry

“Tenuous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tenuous. Accessed 1 Nov. 2026.

Kids Definition

tenuous

adjective
: having little substance or strength : flimsy, weak
a tenuous hold on reality
tenuously adverb

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