doubt: verb conjugation and noun forms

Singular and plural for doubt[daut]     

Singular
Plural
Singular
Common case
doubt
doubts
Possessive case
doubt's
doubts'
Plural
doubts
doubts'

Conjugation of the verb doubt[daut], regular     

doubt not doubt
All forms Indicative Conditional Participles Infinitives

Indicative

Present Indefinite

I doubt
you doubt
he/she/it doubts
we doubt
you doubt
they doubt

Present Continuous

I am doubting
you are doubting
he/she/it is doubting
we are doubting
you are doubting
they are doubting

Present Perfect

I have doubted
you have doubted
he/she/it has doubted
we have doubted
you have doubted
they have doubted

Present Perfect Continuous

I have been doubting
you have been doubting
he/she/it has been doubting
we have been doubting
you have been doubting
they have been doubting

Past Indefinite

I doubted
you doubted
he/she/it doubted
we doubted
you doubted
they doubted

Past Continuous

I was doubting
you were doubting
he/she/it was doubting
we were doubting
you were doubting
they were doubting

Past Perfect

I had doubted
you had doubted
he/she/it had doubted
we had doubted
you had doubted
they had doubted

Past Perfect Continuous

I had been doubting
you had been doubting
he/she/it had been doubting
we had been doubting
you had been doubting
they had been doubting

Future Indefinite

I will doubt
you will doubt
he/she/it will doubt
we will doubt
you will doubt
they will doubt

Future Continuous

I will be doubting
you will be doubting
he/she/it will be doubting
we will be doubting
you will be doubting
they will be doubting

Future Perfect

I will have doubted
you will have doubted
he/she/it will have doubted
we will have doubted
you will have doubted
they will have doubted

Future Perfect Continuous

I will have been doubting
you will have been doubting
he/she/it will have been doubting
we will have been doubting
you will have been doubting
they will have been doubting

Indicative

Present Indefinite

I don't doubt
you don't doubt
he/she/it doesn't doubt
we don't doubt
you don't doubt
they don't doubt

Present Continuous

I am not doubting
you aren't doubting
he/she/it isn't doubting
we aren't doubting
you aren't doubting
they aren't doubting

Present Perfect

I haven't doubted
you haven't doubted
he/she/it hasn't doubted
we haven't doubted
you haven't doubted
they haven't doubted

Present Perfect Continuous

I haven't been doubting
you haven't been doubting
he/she/it hasn't been doubting
we haven't been doubting
you haven't been doubting
they haven't been doubting

Past Indefinite

I didn't doubt
you didn't doubt
he/she/it didn't doubt
we didn't doubt
you didn't doubt
they didn't doubt

Past Continuous

I wasn't doubting
you weren't doubting
he/she/it wasn't doubting
we weren't doubting
you weren't doubting
they weren't doubting

Past Perfect

I hadn't doubted
you hadn't doubted
he/she/it hadn't doubted
we hadn't doubted
you hadn't doubted
they hadn't doubted

Past Perfect Continuous

I hadn't been doubting
you hadn't been doubting
he/she/it hadn't been doubting
we hadn't been doubting
you hadn't been doubting
they hadn't been doubting

Future Indefinite

I shan't / won't doubt
you won't doubt
he/she/it won't doubt
we shan't / won't doubt
you won't doubt
they won't doubt

Future Continuous

I shan't / won't be doubting
you won't be doubting
he/she/it won't be doubting
we shan't / won't be doubting
you won't be doubting
they won't be doubting

Future Perfect

I shan't / won't have doubted
you won't have doubted
he/she/it won't have doubted
we shan't / won't have doubted
you won't have doubted
they won't have doubted

Future Perfect Continuous

I shan't / won't have been doubting
you won't have been doubting
he/she/it won't have been doubting
we shan't / won't have been doubting
you won't have been doubting
they won't have been doubting

Indicative

Present Indefinite

Present Continuous

Present Perfect

Present Perfect Continuous

Past Indefinite

Past Continuous

Past Perfect

Past Perfect Continuous

Future Indefinite

Future Continuous

Future Perfect

Future Perfect Continuous

Conditional

Conditional Present

I would doubt
you would doubt
he/she/it would doubt
we would doubt
you would doubt
they would doubt

Conditional Present Continuous

I would be doubting
you would be doubting
he/she/it would be doubting
we would be doubting
you would be doubting
they would be doubting

Conditional Perfect

I would have doubted
you would have doubted
he/she/it would have doubted
we would have doubted
you would have doubted
they would have doubted

Conditional Perfect Continuous

I would have been doubting
you would have been doubting
he/she/it would have been doubting
we would have been doubting
you would have been doubting
they would have been doubting

Conditional

Conditional Present

I wouldn't doubt
you wouldn't doubt
he/she/it wouldn't doubt
we wouldn't doubt
you wouldn't doubt
they wouldn't doubt

Conditional Present Continuous

I wouldn't be doubting
you wouldn't be doubting
he/she/it wouldn't be doubting
we wouldn't be doubting
you wouldn't be doubting
they wouldn't be doubting

Conditional Perfect

I wouldn't have doubted
you wouldn't have doubted
he/she/it wouldn't have doubted
we wouldn't have doubted
you wouldn't have doubted
they wouldn't have doubted

Conditional Perfect Continuous

I wouldn't have been doubting
you wouldn't have been doubting
he/she/it wouldn't have been doubting
we wouldn't have been doubting
you wouldn't have been doubting
they wouldn't have been doubting

Conditional

Conditional Present

Conditional Present Continuous

Conditional Perfect

Conditional Perfect Continuous

Participles

Present

doubting

Past

doubted

Infinitives

Infinitives

to doubt
to have doubted
to be doubting
to have been doubting
Did you find any mistake or inaccuracy? Please write to us.

English Verb Conjugation Online

PROMT.One helps you quickly check English verb forms online. Enter a verb and instantly get a table with the base form, the 3rd person singular form, the Past Simple form, the Past Participle form, and the -ing form, as well as conjugation across all 12 tenses with examples.

What the Table Shows

The service displays English verb forms by person, number, and tense, including regular, irregular, and phrasal verbs. This is useful for studying, translation, writing, and quick grammar checks.

How to Use It

  • Enter an English verb in the search box.
  • Click Search.
  • Get a table of forms, tenses, and usage examples.

Frequently Asked Questions

Which forms does the service show?
The base form, the 3rd person singular form, the Past Simple form, the Past Participle form, and the -ing form.

Does the service show irregular verbs?
Yes. PROMT.One shows irregular English verb forms and their usage across tenses.

Can I check a phrasal verb?
Yes. The service supports phrasal verbs and shows their forms together with examples.

Try it now: enter an English verb and get a complete table of forms and tenses in PROMT.One.

PROMT.One is a fast and helpful tool for any language learner. Check the conjugation of verbs and see the table of tenses for English, German, Russian, French, Italian, Portuguese and Spanish.