DOUBTFUL Synonyms: 144 Similar and Opposite Words

Q: How does the adjective 'doubtful' contrast with its synonyms?

Some common synonyms of doubtful are dubious , problematic , and questionable . While all these words mean "not affording assurance of the worth, soundness, or certainty of something," doubtful implies little more than a lack of conviction or certainty. // doubtful about whether I said the right thing

Q: When is 'dubious' a more appropriate choice than 'doubtful'?

The words dubious and doubtful are synonyms, but do differ in nuance. Specifically, dubious stresses suspicion, mistrust, or hesitation. // dubious about the practicality of the scheme

Q: When is it sensible to use 'problematic' instead of 'doubtful'?

While the synonyms problematic and doubtful are close in meaning, problematic applies especially to things whose existence, meaning, fulfillment, or realization is highly uncertain. // whether the project will ever be finished is problematic

Q: When would 'questionable' be a good substitute for 'doubtful'?

While in some cases nearly identical to doubtful , questionable may imply no more than the existence of doubt but usually suggests that the suspicions are well-grounded. // a man of questionable honesty

doubtful

adjective

ˈdau̇t-fəl

Definition of doubtful next

as in unsure

not feeling sure about the truth, wisdom, or trustworthiness of someone or something he was doubtful about the decision to complete the project despite its mounting problems

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Antonyms & Near Antonyms

as in questionable

giving good reason for being doubted, questioned, or challenged the election results were highly doubtful, so an investigation was begun

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as in unlikely

not likely to be true or to occur our winning the championship increasingly looks like a doubtful outcome

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as in disputable

open to question or dispute a doubtful claim to the property

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Synonym Chooser

How does the adjective doubtful contrast with its synonyms?

Some common synonyms of doubtful are dubious, problematic, and questionable. While all these words mean "not affording assurance of the worth, soundness, or certainty of something," doubtful implies little more than a lack of conviction or certainty.

doubtful about whether I said the right thing

When is dubious a more appropriate choice than doubtful?

The words dubious and doubtful are synonyms, but do differ in nuance. Specifically, dubious stresses suspicion, mistrust, or hesitation.

dubious about the practicality of the scheme

When is it sensible to use problematic instead of doubtful?

While the synonyms problematic and doubtful are close in meaning, problematic applies especially to things whose existence, meaning, fulfillment, or realization is highly uncertain.

whether the project will ever be finished is problematic

When would questionable be a good substitute for doubtful?

While in some cases nearly identical to doubtful, questionable may imply no more than the existence of doubt but usually suggests that the suspicions are well-grounded.

a man of questionable honesty

Example Sentences

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.

Recent Examples of doubtful Ukraine’s troops are on the back foot against Russia along several parts of the long front line, the military is short of experienced soldiers and officials are doubtful that once Trump retakes office, military aid will continue to arrive at anything like the current rate. —

Alexis Simendinger, The Hill, 14 Jan. 2025 His replacement in the starting lineup, freshman Divine Ugochukwu, injured his left hip during the FSU game, has not practiced since, and is doubtful for Saturday. —

Michelle Kaufman, Miami Herald, 10 Jan. 2025 But the eleventh-hour revelations caused increasing distress for Democrats already distrustful of Pete Hegseth and doubtful of his ability to lead the massive agency. —

Al Weaver, The Hill, 21 Jan. 2025 Yet, court watchers are doubtful the justices will overturn a lower court’s decision upholding the law. —

Maureen Groppe, USA TODAY, 9 Jan. 2025 See all Example Sentences for doubtful

Recent Examples of Synonyms for doubtful

Adjective

Meanwhile, police are unsure if the attacker acted on his own and are searching for other potential suspects.

— Josh Hammer, Newsweek, 15 Feb. 2025
The Trump of the first half of the movie might surprise viewers used to the 2025 version: an outer-borough scion, ambitious but unsure, who bristles under his despotic father, aspires to greater recognition and bets big on the revival of Midtown Manhattan during its 1970s nadir.

— Marc Tracy, New York Times, 12 Feb. 2025