doubt

American  

[daut] / daʊt /

verb (used with object)

• doubts,
  present (3rd person singular)
• doubted,
  past participle,  past
• doubting
  present participle

1. to be uncertain about; consider questionable or unlikely; hesitate to believe.

   The police have good reason to doubt his alibi.

   Synonyms:

   question, suspect, mistrust

2. to distrust; regard with suspicion.

   I doubted the salesman, so we decided to check with other dealers.

   Synonyms:

   question, suspect, mistrust

3. Archaic. to fear; be apprehensive about.

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verb (used without object)

• doubts,
  present (3rd person singular)
• doubted,
  past participle,  past
• doubting
  present participle

1. to be uncertain about something; be undecided in opinion or belief.

   The priest told me that it was normal to doubt, but encouraged me to nurture my faith.

noun

• doubts
  plural

1. a feeling of uncertainty about the truth, reality, or nature of something.

   We all had our doubts about your mysterious Canadian girlfriend since no one has ever seen her in person.

   Synonyms:

   irresolution, indecision

2. distrust or suspicion.

   Voters naturally held some doubt about the abrupt change in policy direction issued by city hall.

3. a general feeling of uncertainty, worry, or concern: Set your doubts aside, and listen to my business idea with an open mind.

   As soon as I'd dropped out of school to become a full-time musician, I was full of doubt—what if I’d made a terrible mistake?

   Set your doubts aside, and listen to my business idea with an open mind.

4. a state of affairs such as to occasion uncertainty.

5. Obsolete. fear; dread.

idioms

1. in doubt, in a state of uncertainty or suspense.

   His appointment to the position is still in doubt.

2. no doubt,

   1. probably.

   2. certainly.

      There is no doubt an element of truth in what you say.

3. beyond a / the shadow of a doubt, with certainty; definitely. Also beyond a doubt, beyond doubt.

4. without doubt, unquestionably; certainly.

doubt British  

/ daʊt /

noun

1. uncertainty about the truth, fact, or existence of something (esp in the phrases in doubt, without doubt, beyond a shadow of doubt, etc)

2. (often plural) lack of belief in or conviction about something

   all his doubts about the project disappeared

3. an unresolved difficulty, point, etc

4. philosophy the methodical device, esp in the philosophy of Descartes, of identifying certain knowledge as the residue after rejecting any proposition which might, however improbably, be false

5. obsolete fear

6. to presume someone suspected of guilt to be innocent; judge leniently

7. almost certainly

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verb

1. (tr; may take a clause as object) to be inclined to disbelieve

   I doubt we are late

2. (tr) to distrust or be suspicious of

   he doubted their motives

3. (intr) to feel uncertainty or be undecided

4. (tr; may take a clause as object) to be inclined to believe

5. archaic (tr) to fear

6. I would expect nothing else from someone

doubt More Idioms  

1. see beyond a doubt; cast doubt on; give the benefit of the doubt; no doubt; shadow of a doubt.

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Usage

Doubt and doubtful may be followed by a subordinate clause beginning with that, whether, or if: I doubt that (or whether or if ) the story is true. It is doubtful that (or whether or if ) the story is true. There is some doubt that (or whether or if ) the story is true. In negative or interrogative sentences, that almost always introduces the subordinate clause: I do not doubt that the story is true. Is it doubtful that the story is true? Is there any doubt that the story is true? The expressions doubt but and doubt but that occur in all varieties of standard speech and writing: I don't doubt but she is sincere. There is no doubt but that the charges will affect his career. Doubt but what occurs mainly in informal speech and writing: There is no doubt but what the rainy weather will hurt the crops.

Where a clause follows doubt in a positive sentence, it was formerly considered correct to use whether ( I doubt whether he will come ), but now if and that are also acceptable. In negative statements, doubt is followed by that: I do not doubt that he is telling the truth. In such sentences, but ( I do not doubt but that he is telling the truth ) is redundant

Other Word Forms

Derived Forms

• doubter
  noun
• doubtingness
  noun
• nondoubter
  noun
• predoubt
  noun
• predoubter
  noun
• overdoubt
  verb (used with object)
• doubtable
  adjective
• nondoubtable
  adjective
• nondoubting
  adjective
• undoubtable
  adjective
• undoubting
  adjective
• doubtably
  adverb
• doubtingly
  adverb
• nondoubtingly
  adverb

Inflected Forms

Nouns

• doubts
  plural

Participles

• doubting
  present
• doubted
  past

Conjugated Forms

Present

• doubt
  simple
• doubts
  simple
• have doubted
  perfect
• has doubted
  perfect
• am doubting
  progressive
• are doubting
  progressive
• is doubting
  progressive
• have been doubting
  perfect progressive
• has been doubting
  perfect progressive

Past

• doubted
  simple
• had doubted
  perfect
• was doubting
  progressive
• were doubting
  progressive
• had been doubting
  perfect progressive

Future

• will doubt
  simple
• will have doubted
  perfect
• will be doubting
  progressive
• will have been doubting
  perfect progressive

Etymology

Origin of doubt

First recorded in 1175–1225; Middle English verb douten, duten, doubten, from Old French douter, doter “to doubt, be doubtful,” from Latin dubitāre “to waver, hesitate, be uncertain” (frequentative of Old Latin dubāre ), equivalent to dub- “doubt” + -it- frequentative suffix + -āre infinitive suffix; noun derivative of the verb. The -b- first appears between 1420–30 in imitation of Latin dubit-

Explanation

Doubt is distrust or suspicion. When your kid sister explains that a robber broke in and ate your entire chocolate stash, most likely you feel doubt. When you're in doubt, you really can't tell what's true and what's false, whether that's a news story or whether you want to marry someone or whether you'll survive Med school. The Latin root of doubt is dubitāre, "to hesitate, waver," and when you doubt something you're wavering: I think I believe you, but maybe I don't. But maybe I do. But maybe not? One thing not to doubt is the silent b. Pronounce: DOWT.

Example Sentences

See Examples For:

doubt doubts doubted doubting

Alleged victims must still prove beyond a reasonable doubt that they were too impaired to consent—and that the accused should have known it.

From The Wall Street Journal ● Oct. 7, 2026

There's no doubt the race was a success.

From BBC ● Oct. 6, 2026

If in doubt about stairs, older people should wait for a friend or family member, but it’s also easier to lecture people after the fact.

From MarketWatch ● Oct. 5, 2026

I have no doubt AI music will keep improving, at least to a point, but I predict few people who actually love music are going to listen that way because it has lost its essence.

From Salon ● Oct. 4, 2026

A sliver of doubt wriggles around in my brain, cramming itself next to my wedge of loyalty.

From "Red Flags and Butterflies" by Sheryl Azzam

Gibney doubts Musk has even seen the film.

From Los Angeles Times ● Oct. 6, 2026

What happened instead solidified existing doubts of those close to Gabriel that United were the right club for him.

From BBC ● Oct. 5, 2026

Monte dei Paschi, which previously raised doubts about the price offered by Intesa and risks linked to the offer, didn’t respond to a request for comment.

From The Wall Street Journal ● Oct. 5, 2026

As investors question whether the memory cycle is reaching a peak, one analyst sees a chance for Micron Technology to quiet doubts when it reports earnings later this week.

From MarketWatch ● Sep. 28, 2026

I whispered that last part, barely said it out loud, but with it came all the past doubts and frustrations bubbling up on their way to my mouth.

From "Hope Springs" by Jaime Berry

He even doubted whether he would make it but said his family and friends kept him grounded.

From BBC ● Oct. 5, 2026

“A couple of years ago, people doubted whether the industry could ever get back to $10 billion,” said Eric Handler, media and entertainment analyst at Roth Capital Partners.

From Los Angeles Times ● Sep. 8, 2026

In April 2024, Mica Miller, the wife of South Carolina pastor John Paul Miller, was found dead in an apparent suicide that friends and family quickly doubted.

From Salon ● Sep. 2, 2026

Now, her fashion and beauty business has reached a milestone many doubted it would achieve: profitability.

From BBC ● Sep. 2, 2026

And I’d doubted her intentions when she’d had my back during our app presentation.

From "Sir Fig Newton and the Science of Persistence" by Sonja Thomas

For Lyttle, having worked with Charles at age-group level with Northern Ireland, there was never any doubting his potential.

From BBC ● Aug. 11, 2026

He sees the junk that AI puts out is a shot in the arm for creatives who are doubting their own instincts.

From Salon ● Jul. 5, 2026

However, there can be no doubting the quality of his goal here - his 10th for Brazil, with three of those coming on US soil.

From BBC ● Jun. 14, 2026

As in “Safe,” the heroine is driven by the doubting crowd into the embrace of the few who believe her.

From The Wall Street Journal ● Jun. 9, 2026

“The scariest part was thinking that I was imagining things. I hated doubting myself.”

From "The Way to Rio Luna" by Zoraida Cordova

Related Words

• ambiguity
• apprehension
• confusion
• difficulty
• disbelief
• distrust
• fear
• hesitation
• misgiving
• mistrust
• problem
• qualm
• reluctance
• skepticism
• suspense
• suspicion
• uncertainty