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uncertain

adjective

un·​cer·​tain ˌən-ˈsər-tᵊn How to pronounce uncertain (audio)
1
a
: not known beyond doubt : dubious
an uncertain claim
b
: not having certain knowledge : doubtful
remains uncertain about her plans
c
: not clearly identified or defined
a fire of uncertain origin
2
: not constant : variable, fitful
an uncertain breeze
3
: indefinite, indeterminate
the time of departure is uncertain
4
: not certain to occur : problematical
his success was uncertain
5
: not reliable : untrustworthy
an uncertain ally
uncertainly adverb
uncertainness
ˌən-ˈsər-tᵊn-(n)əs How to pronounce uncertain (audio)
noun

Synonyms

Example Sentences

The time of departure is still uncertain. We are still uncertain of the truth. She remains uncertain about her plans. I'm uncertain about how to respond. The cause of the fire is uncertain. He has an uncertain temper. They face a financially uncertain future. See More
Recent Examples on the Web Penn State University professor Richard Alley, an ice sheet expert, said the fact that researchers remain uncertain about how the planet’s ice sheets will change and raise global sea levels shows the need for more research. Chris Mooney, Washington Post, 29 Aug. 2022 Fearing illness and uncertain about their finances, many congregants reduced or even withdrew their contributions, Laughlin says. Cathi Douglas, San Diego Union-Tribune, 21 Aug. 2022 Doug Shupe, communications manager for AAA, is more uncertain about if and when Californians could see $5 gasoline become widely available. Anthony De Leon, Los Angeles Times, 8 Aug. 2022 Yet, while about 22 percent of eligible Americans are unvaccinated, almost all of this group are vaccine skeptics, who are unwilling or uncertain about getting vaccinated. Steven Phillips, Scientific American, 3 Aug. 2022 Although many things are uncertain about the year 2022, one thing is for certain: candles remain pivotal in bringing more serenity to us all than ever before. ELLE, 21 July 2022 That has physicians uncertain about how much to take them into account when prescribing. Edward Chen, STAT, 8 July 2022 Recent hires who feel uncertain about their manager, coworkers or job assignments begin to think about leaving. Lynne Curry | Alaska Workplace, Anchorage Daily News, 5 July 2022 The Heat had been uncertain about Garrett’s status for summer league as recently as last week. Ira Winderman, Sun Sentinel, 28 June 2022 See More

Word History

First Known Use

14th century, in the meaning defined at sense 3

Time Traveler
The first known use of uncertain was in the 14th century

Phrases Containing uncertain

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