knife: verb conjugation and noun forms

Singular and plural for knife[naɪf]     

Singular
Plural
Singular
Common case
knife
knives / knifes
Possessive case
knife's
knives' / knifes'
Plural
knives / knifes
knives' / knifes'

Superlative and Comparative Forms of knife[naɪf]     

Positive

knife

Conjugation of the verb knife[naɪf], regular     

knife not knifeknife?
All forms Indicative Conditional Participles Infinitives

Indicative

Present Indefinite

I knife
you knife
he/she/it knifes
we knife
you knife
they knife

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Indicative

Present Indefinite

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

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Indicative

Present Indefinite

do I knife?
do you knife?
does he/she/it knife?
do we knife?
do you knife?
do they knife?

Present Continuous

am I knifing?
are you knifing?
is he/she/it knifing?
are we knifing?
are you knifing?
are they knifing?

Present Perfect

have I knifed?
have you knifed?
has he/she/it knifed?
have we knifed?
have you knifed?
have they knifed?

Present Perfect Continuous

have I been knifing?
have you been knifing?
has he/she/it been knifing?
have we been knifing?
have you been knifing?
have they been knifing?

Past Indefinite

did I knife?
did you knife?
did he/she/it knife?
did we knife?
did you knife?
did they knife?

Past Continuous

was I knifing?
were you knifing?
was he/she/it knifing?
were we knifing?
were you knifing?
were they knifing?

Past Perfect

had I knifed?
had you knifed?
had he/she/it knifed?
had we knifed?
had you knifed?
had they knifed?

Past Perfect Continuous

had I been knifing?
had you been knifing?
had he/she/it been knifing?
had we been knifing?
had you been knifing?
had they been knifing?

Future Indefinite

will I knife?
will you knife?
will he/she/it knife?
will we knife?
will you knife?
will they knife?

Future Continuous

will I be knifing?
will you be knifing?
will he/she/it be knifing?
will we be knifing?
will you be knifing?
will they be knifing?

Future Perfect

will I have knifed?
will you have knifed?
will he/she/it have knifed?
will we have knifed?
will you have knifed?
will they have knifed?

Future Perfect Continuous

will I have been knifing?
will you have been knifing?
will he/she/it have been knifing?
will we have been knifing?
will you have been knifing?
will they have been knifing?

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Conditional

Conditional Present

would I knife?
would you knife?
would he/she/it knife?
would we knife?
would you knife?
would they knife?

Conditional Present Continuous

would I be knifing?
would you be knifing?
would he/she/it be knifing?
would we be knifing?
would you be knifing?
would they be knifing?

Conditional Perfect

would I have knifed?
would you have knifed?
would he/she/it have knifed?
would we have knifed?
would you have knifed?
would they have knifed?

Conditional Perfect Continuous

would I have been knifing?
would you have been knifing?
would he/she/it have been knifing?
would we have been knifing?
would you have been knifing?
would they have been knifing?

Participles

Present

knifing

Past

knifed

Infinitives

Infinitives

to knife
to have knifed
to be knifing
to have been knifing
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.