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doubtful
1 ENTRIES FOUND:
Learner's definition of DOUBTFUL
[more doubtful; most doubtful]
1
: uncertain or unsure about something不确定的；拿不准的 — often + about or of
- I tried to reassure them, but they remained doubtful.我试图使他们安心，可他们还是心存疑虑。
- She gave him a doubtful look. [=a look that shows doubt]她疑惑地看了他一眼。
- They were doubtful about the benefits of the new system. = They were doubtful of its benefits.他们对新系统的优势表示怀疑。
2
: not likely to be true : not probable不大可能的；未必真实的 — often + that, if, or whether
- He made the doubtful [=dubious] claim that he had never been sick a day in his life.他说他一生从未生过一天病，这未必是真的。
- The truth of the statements was doubtful.这些说法不太可能是真实的。
- It's highly doubtful [=unlikely, improbable] that anyone will notice.不太可能会有人留意。
- It is doubtful if she really meant what she said.她未必心口如一。
- The situation is bad and it's doubtful whether it will get better soon.现在形势很差，短时间内也未必能改善。
3
: likely to be bad : not worthy of trust不值得信任的；靠不住的
- The water available in the village is of doubtful [=questionable] quality.村里可用水的水质可能有问题。
- Their decisions were based on data of doubtful accuracy.他们的决定建立在不准确的数据之上。
4
: not certain : unknown or undecided不明的；未确定的
- The outcome of the election remains doubtful.选举的结果还不明朗。
- The company is facing a doubtful future.公司的未来还是未知数。
— doubtfully
adverb- She looked at him doubtfully.她怀疑地看着他。
doubtful
adjective
doubt·ful ˈdau̇t-fəl 
doubtfulness noun
Synonyms
Example Sentences
I tried to reassure them, but they remained doubtful. The truth of the statements was doubtful. Their decisions were based on data of doubtful accuracy.
Recent Examples on the Web Bears rookie wide receiver/returner Velus Jones Jr. was listed as doubtful to play with a hamstring injury, while rookie defensive end Dominique Robinson was questionable with a knee injury. 
Colleen Kane, Chicago Tribune, 11 Sep. 2022 After not practicing all week, J.C. Jackson was officially designated as doubtful for the Chargers’ season-opener Sunday against Las Vegas. Jeff Miller, Los Angeles Times, 9 Sep. 2022 Practice emotional intelligence by being self-aware in the situation—manage the feelings of being uncomfortable or doubtful of yourself and know the triggers. Expert Panel®, Forbes, 17 June 2022 But Frost and other legal experts said that making the procedures less opaque would help build trust among the court skeptics doubtful of Thomas' and other justices' refusal to recuse in certain cases. Tierney Sneed, Caroline Kenny And Pamela Brown, CNN, 4 Feb. 2022 McFadden, however, is doubtful of the building's effectiveness. NBC News, 3 Nov. 2021 Senate Democrats, doubtful of getting the 60 votes needed to thwart a possible filibuster, are considering adding some PRO Act provisions to a $3.5 trillion spending bill. Russ Wiles, The Arizona Republic, 1 Sep. 2021 In March, the White House also orchestrated an Instagram Live chat between Dr. Fauci and Eugenio Derbez, a Mexican actor with over 16.6 million Instagram followers who had been openly doubtful of the vaccines. New York Times, 2 Aug. 2021 However, the outlook for further development during the weekend remains doubtful because the disturbance will run into unfavorable conditions. Chris Perkins, Sun Sentinel, 10 Aug. 2022 See More
Colleen Kane, Chicago Tribune, 11 Sep. 2022 After not practicing all week, J.C. Jackson was officially designated as doubtful for the Chargers’ season-opener Sunday against Las Vegas. Jeff Miller, Los Angeles Times, 9 Sep. 2022 Practice emotional intelligence by being self-aware in the situation—manage the feelings of being uncomfortable or doubtful of yourself and know the triggers. Expert Panel®, Forbes, 17 June 2022 But Frost and other legal experts said that making the procedures less opaque would help build trust among the court skeptics doubtful of Thomas' and other justices' refusal to recuse in certain cases. Tierney Sneed, Caroline Kenny And Pamela Brown, CNN, 4 Feb. 2022 McFadden, however, is doubtful of the building's effectiveness. NBC News, 3 Nov. 2021 Senate Democrats, doubtful of getting the 60 votes needed to thwart a possible filibuster, are considering adding some PRO Act provisions to a $3.5 trillion spending bill. Russ Wiles, The Arizona Republic, 1 Sep. 2021 In March, the White House also orchestrated an Instagram Live chat between Dr. Fauci and Eugenio Derbez, a Mexican actor with over 16.6 million Instagram followers who had been openly doubtful of the vaccines. New York Times, 2 Aug. 2021 However, the outlook for further development during the weekend remains doubtful because the disturbance will run into unfavorable conditions. Chris Perkins, Sun Sentinel, 10 Aug. 2022 See More Word History
Etymology
see doubt entry 1
First Known Use
14th century, in the meaning defined at sense 3
Time Traveler
The first known use of doubtful was in the 14th century adjective¹
adjective²
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