1
as in unsteady
not being in or able to maintain a state of balance
the minute we put the books down on the unstable desk, the whole stack went crashing to the floor
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in volatile
likely to change frequently, suddenly, or unexpectedly
financial investors don't like an unstable economy
Synonyms & Similar Words
Antonyms & Near Antonyms
3
as in changing
not staying constant
unstable temperatures are not ideal storage conditions for wine
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of unstable
Sacramento County Department of Transportation workers began work this week to remove a nearly 40-year-old fall risk along Sunrise Boulevard in Fair Oaks — a sound wall that officials said had become dangerously unstable.
—
Madison Smalstig,
Sacbee.com,
17 June 2026
To Booth, the strike is less about power than the body’s ability to trust an inherently unstable position.
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Amelie Claydon,
New York Times,
17 June 2026
Making matters worse, heat waves can create conditions favorable for lightning because of the hot, unstable atmosphere.
—
Mukesh Kumar,
The Conversation,
17 June 2026
On June 4, the National Emergency Commission declared the alert for the entire country with unstable weather expected to continue for the next couple of weeks.
—
Sarah Rumpf-Whitten,
FOXNews.com,
15 June 2026
See All Example Sentences for unstable
Madison Smalstig,
Sacbee.com,
17 June 2026
To Booth, the strike is less about power than the body’s ability to trust an inherently unstable position.
—
Amelie Claydon,
New York Times,
17 June 2026
Making matters worse, heat waves can create conditions favorable for lightning because of the hot, unstable atmosphere.
—
Mukesh Kumar,
The Conversation,
17 June 2026
On June 4, the National Emergency Commission declared the alert for the entire country with unstable weather expected to continue for the next couple of weeks.
—
Sarah Rumpf-Whitten,
FOXNews.com,
15 June 2026
See All Example Sentences for unstable
Recent Examples of Synonyms for unstable
Adjective
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McConnell has always appeared to have a somewhat unsteady gate — a childhood bout of polio left him with a partially paralyzed leg.
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Swalwell's absence on the campaign trail allowed Becerra to gain more traction as a seemingly steady Democratic option in a very unsteady race.
Adjective
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Aerion Targaryen Aerion Targaryen (Finn Bennett), also known as Aerion Brightflame, is a volatile and cruel Targaryen prince infamous for his arrogance and violent behavior.
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Even excluding volatile food and energy prices, core PCE is expected to increase from April, according to economists polled by FactSet.
Adjective
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In some studies, gloves not changed between tasks had higher bacterial counts and could transfer germs just as easily as ungloved hands, underscoring the need for frequent changing and proper hand hygiene.
Adjective
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But like others interviewed by the AJC, this trainee opted not to report his allegations because of his precarious employment status.
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Even Hollywood critics of the generative AI economy express sympathy for those working in this precarious field.
Adjective
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This unpredictable chaos, fueled by technological glitches and administrative issues, is worsening as peak summer travel begins.
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However, construction zones are inherently unpredictable.
Adjective
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If visible pores or uneven texture is a concern for you at all, this primer is the ultimate solution.
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As with that earlier boom-and-bust cycle, the AI landscape is likely to yield uneven outcomes, according to Qian Wang, global head of capital market research at Vanguard, and senior global economist Kevin Khang.
Adjective
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The team found the carbon-bearing material in mudstones located within Bright Angel, a rocky region connected to Neretva Vallis, an ancient river channel that once carried water into Jezero Crater.
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What to read next First, Perseverance has found organic, large, complex carbon in mudstones in Bright Angel, a rocky area on the northern and southern edges of Neretva Vallis, which is an ancient river valley in the Jezero area.
Adjective
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This is a recurring injury for Smith, who has missed five of the last nine games due to varying levels of discomfort in his calf.
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Even within a single day, temporary weight shifts are common and are often due to varying levels of fluid retention.
Cite this Entry
“Unstable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unstable. Accessed 26 Jun. 2026.
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