jackknife: verb conjugation and noun forms

Conjugation of the verb jackknife[ˈdʒæknaɪf], regular     

not jackknife
All forms Indicative Conditional Participles Infinitives

Indicative

Present Indefinite

I jackknife
you jackknife
he/she/it jackknifes
we jackknife
you jackknife
they jackknife

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Indicative

Present Indefinite

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

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Participles

Present

jackknifing

Past

jackknifed

Infinitives

Infinitives

to jackknife
to have jackknifed
to be jackknifing
to have been jackknifing

Singular and plural for jackknife[ˈdʒæknaɪf]     

Singular
Plural
Singular
Common case
jackknife
jackknives / jackknifes
Possessive case
jackknife's
jackknives' / jackknifes'
Plural
jackknives / jackknifes
jackknives' / jackknifes'
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