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Conjugation of the verb "to doubt"

Regular verb

to

doubt

Indicative

Present

Affirmative
  1. Idoubt
  2. youdoubt
  3. he, she, itdoubts
  4. wedoubt
  5. youdoubt
  6. theydoubt
Negative
  1. Ido not doubt
  2. youdo not doubt
  3. he, she, itdoes not doubt
  4. wedo not doubt
  5. youdo not doubt
  6. theydo not doubt
Interrogative
  1. DoI doubt?
  2. Doyou doubt?
  3. Doeshe, she, it doubt?
  4. Dowe doubt?
  5. Doyou doubt?
  6. Dothey doubt?
Passive
  1. Iam doubted
  2. youare doubted
  3. he, she, itis doubted
  4. weare doubted
  5. youare doubted
  6. theyare doubted

Simple past

Affirmative
  1. Idoubted
  2. youdoubted
  3. he, she, itdoubted
  4. wedoubted
  5. youdoubted
  6. theydoubted
Negative
  1. Idid not doubt
  2. youdid not doubt
  3. he, she, itdid not doubt
  4. wedid not doubt
  5. youdid not doubt
  6. theydid not doubt
Interrogative
  1. DidI doubt?
  2. Didyou doubt?
  3. Didhe, she, it doubt?
  4. Didwe doubt?
  5. Didyou doubt?
  6. Didthey doubt?
Passive
  1. Iwas doubted
  2. youwere doubted
  3. he, she, itwas doubted
  4. wewere doubted
  5. youwere doubted
  6. theywere doubted

Future

Affirmative
  1. Iwill doubt
  2. youwill doubt
  3. he, she, itwill doubt
  4. wewill doubt
  5. youwill doubt
  6. theywill doubt
Negative
  1. Iwill not doubt
  2. youwill not doubt
  3. he, she, itwill not doubt
  4. wewill not doubt
  5. youwill not doubt
  6. theywill not doubt
Interrogative
  1. WillI doubt?
  2. Willyou doubt?
  3. Willhe, she, it doubt?
  4. Willwe doubt?
  5. Willyou doubt?
  6. Willthey doubt?
Passive
  1. Iwill be doubted
  2. youwill be doubted
  3. he, she, itwill be doubted
  4. wewill be doubted
  5. youwill be doubted
  6. theywill be doubted

Present perfect

Affirmative
  1. Ihave doubted
  2. youhave doubted
  3. he, she, ithas doubted
  4. wehave doubted
  5. youhave doubted
  6. theyhave doubted
Negative
  1. Ihave not doubted
  2. youhave not doubted
  3. he, she, ithas not doubted
  4. wehave not doubted
  5. youhave not doubted
  6. theyhave not doubted
Interrogative
  1. HaveI doubted?
  2. Haveyou doubted?
  3. Hashe, she, it doubted?
  4. Havewe doubted?
  5. Haveyou doubted?
  6. Havethey doubted?
Passive
  1. Ihave been doubted
  2. youhave been doubted
  3. he, she, ithas been doubted
  4. wehave been doubted
  5. youhave been doubted
  6. theyhave been doubted

Past perfect

Affirmative
  1. Ihad doubted
  2. youhad doubted
  3. he, she, ithad doubted
  4. wehad doubted
  5. youhad doubted
  6. theyhad doubted
Negative
  1. Ihad not doubted
  2. youhad not doubted
  3. he, she, ithad not doubted
  4. wehad not doubted
  5. youhad not doubted
  6. theyhad not doubted
Interrogative
  1. HadI doubted?
  2. Hadyou doubted?
  3. Hadhe, she, it doubted?
  4. Hadwe doubted?
  5. Hadyou doubted?
  6. Hadthey doubted?
Passive
  1. Ihad been doubted
  2. youhad been doubted
  3. he, she, ithad been doubted
  4. wehad been doubted
  5. youhad been doubted
  6. theyhad been doubted

Future perfect

Affirmative
  1. Iwill have doubted
  2. youwill have doubted
  3. he, she, itwill have doubted
  4. wewill have doubted
  5. youwill have doubted
  6. theywill have doubted
Negative
  1. Iwill not have doubted
  2. youwill not have doubted
  3. he, she, itwill not have doubted
  4. wewill not have doubted
  5. youwill not have doubted
  6. theywill not have doubted
Interrogative
  1. WillI have doubted?
  2. Willyou have doubted?
  3. Willhe, she, it have doubted?
  4. Willwe have doubted?
  5. Willyou have doubted?
  6. Willthey have doubted?
Passive
  1. Iwill have been doubted
  2. youwill have been doubted
  3. he, she, itwill have been doubted
  4. wewill have been doubted
  5. youwill have been doubted
  6. theywill have been doubted

Present continuous

Affirmative
  1. Iam doubting
  2. youare doubting
  3. he, she, itis doubting
  4. weare doubting
  5. youare doubting
  6. theyare doubting
Negative
  1. Iam not doubting
  2. youare not doubting
  3. he, she, itis not doubting
  4. weare not doubting
  5. youare not doubting
  6. theyare not doubting
Interrogative
  1. AmI doubting?
  2. Areyou doubting?
  3. Ishe, she, it doubting?
  4. Arewe doubting?
  5. Areyou doubting?
  6. Arethey doubting?

Past continuous

Affirmative
  1. Iwas doubting
  2. youwere doubting
  3. he, she, itwas doubting
  4. wewere doubting
  5. youwere doubting
  6. theywere doubting
Negative
  1. Iwas not doubting
  2. youwere not doubting
  3. he, she, itwas not doubting
  4. wewere not doubting
  5. youwere not doubting
  6. theywere not doubting
Interrogative
  1. WasI doubting?
  2. Wereyou doubting?
  3. Washe, she, it doubting?
  4. Werewe doubting?
  5. Wereyou doubting?
  6. Werethey doubting?

Future continuous

Affirmative
  1. Iwill be doubting
  2. youwill be doubting
  3. he, she, itwill be doubting
  4. wewill be doubting
  5. youwill be doubting
  6. theywill be doubting
Negative
  1. Iwill not be doubting
  2. youwill not be doubting
  3. he, she, itwill not be doubting
  4. wewill not be doubting
  5. youwill not be doubting
  6. theywill not be doubting
Interrogative
  1. WillI be doubting?
  2. Willyou be doubting?
  3. Willhe, she, it be doubting?
  4. Willwe be doubting?
  5. Willyou be doubting?
  6. Willthey be doubting?

Future perfect continuous

Affirmative
  1. Iwill have been doubting
  2. youwill have been doubting
  3. he, she, itwill have been doubting
  4. wewill have been doubting
  5. youwill have been doubting
  6. theywill have been doubting
Negative
  1. Iwill not have been doubting
  2. youwill not have been doubting
  3. he, she, itwill not have been doubting
  4. wewill not have been doubting
  5. youwill not have been doubting
  6. theywill not have been doubting
Interrogative
  1. WillI have been doubting?
  2. Willyou have been doubting?
  3. Willhe, she, it have been doubting?
  4. Willwe have been doubting?
  5. Willyou have been doubting?
  6. Willthey have been doubting?

Present perfect continuous

Affirmative
  1. Ihave been doubting
  2. youhave been doubting
  3. he, she, ithas been doubting
  4. wehave been doubting
  5. youhave been doubting
  6. theyhave been doubting
Negative
  1. Ihave not been doubting
  2. youhave not been doubting
  3. he, she, ithas not been doubting
  4. wehave not been doubting
  5. youhave not been doubting
  6. theyhave not been doubting
Interrogative
  1. HaveI been doubting?
  2. Haveyou been doubting?
  3. Hashe, she, it been doubting?
  4. Havewe been doubting?
  5. Haveyou been doubting?
  6. Havethey been doubting?

Past perfect continuous

Affirmative
  1. Ihad been doubting
  2. youhad been doubting
  3. he, she, ithad been doubting
  4. wehad been doubting
  5. youhad been doubting
  6. theyhad been doubting
Negative
  1. Ihad not been doubting
  2. youhad not been doubting
  3. he, she, ithad not been doubting
  4. wehad not been doubting
  5. youhad not been doubting
  6. theyhad not been doubting
Interrogative
  1. HadI been doubting?
  2. Hadyou been doubting?
  3. Hadhe, she, it been doubting?
  4. Hadwe been doubting?
  5. Hadyou been doubting?
  6. Hadthey been doubting?

Present emphatic

Affirmative
  1. Ido doubt
  2. youdo doubt
  3. he, she, itdoes doubt
  4. wedo doubt
  5. youdo doubt
  6. theydo doubt

Past emphatic

Affirmative
  1. Idid doubt
  2. youdid doubt
  3. he, she, itdid doubt
  4. wedid doubt
  5. youdid doubt
  6. theydid doubt

Conditional

Present

Affirmative
  1. Iwould doubt
  2. youwould doubt
  3. he, she, itwould doubt
  4. wewould doubt
  5. youwould doubt
  6. theywould doubt
Negative
  1. Iwould not doubt
  2. youwould not doubt
  3. he, she, itwould not doubt
  4. wewould not doubt
  5. youwould not doubt
  6. theywould not doubt
Interrogative
  1. WouldI doubt?
  2. Wouldyou doubt?
  3. Wouldhe, she, it doubt?
  4. Wouldwe doubt?
  5. Wouldyou doubt?
  6. Wouldthey doubt?
Passive
  1. Iwould be doubted
  2. youwould be doubted
  3. he, she, itwould be doubted
  4. wewould be doubted
  5. youwould be doubted
  6. theywould be doubted

Perfect

Affirmative
  1. Iwould have doubted
  2. youwould have doubted
  3. he, she, itwould have doubted
  4. wewould have doubted
  5. youwould have doubted
  6. theywould have doubted
Negative
  1. Iwould not have doubted
  2. youwould not have doubted
  3. he, she, itwould not have doubted
  4. wewould not have doubted
  5. youwould not have doubted
  6. theywould not have doubted
Interrogative
  1. WouldI have doubted?
  2. Wouldyou have doubted?
  3. Wouldhe, she, it have doubted?
  4. Wouldwe have doubted?
  5. Wouldyou have doubted?
  6. Wouldthey have doubted?
Passive
  1. Iwould have been doubted
  2. youwould have been doubted
  3. he, she, itwould have been doubted
  4. wewould have been doubted
  5. youwould have been doubted
  6. theywould have been doubted

Present continuous

Affirmative
  1. Iwould be doubting
  2. youwould be doubting
  3. he, she, itwould be doubting
  4. wewould be doubting
  5. youwould be doubting
  6. theywould be doubting

Perfect continuous

Affirmative
  1. Iwould have been doubting
  2. youwould have been doubting
  3. he, she, itwould have been doubting
  4. wewould have been doubting
  5. youwould have been doubting
  6. theywould have been doubting

Imperative

Present

Affirmative
  1. I—
  2. youdoubt!
  3. he, she, it—
  4. welet's doubt!
  5. youdoubt!
  6. they—
Negative
  1. I—
  2. youdon't doubt!
  3. he, she, it—
  4. welet's not doubt!
  5. youdon't doubt!
  6. they—

Subjunctive

Present

Affirmative
  1. Idoubt
  2. youdoubt
  3. he, she, itdoubt
  4. wedoubt
  5. youdoubt
  6. theydoubt

Past

Affirmative
  1. Idoubted
  2. youdoubted
  3. he, she, itdoubted
  4. wedoubted
  5. youdoubted
  6. theydoubted

Past perfect

Affirmative
  1. Ihad doubted
  2. youhad doubted
  3. he, she, ithad doubted
  4. wehad doubted
  5. youhad doubted
  6. theyhad doubted

Future

Affirmative
  1. Ishould doubt
  2. youshould doubt
  3. he, she, itshould doubt
  4. weshould doubt
  5. youshould doubt
  6. theyshould doubt

Infinitive

Present

Affirmative
  1. (to) doubt

Perfect

Affirmative
  1. (to) have doubted

Participle

Present

Affirmative
  1. doubting

Past

Affirmative
  1. doubted