fail: verb conjugation and noun forms

Conjugation of the verb fail[feɪl], regular     

not fail
All forms Indicative Conditional Participles Infinitives

Indicative

Present Indefinite

I fail
you fail
he/she/it fails
we fail
you fail
they fail

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Indicative

Present Indefinite

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

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Participles

Present

failing

Past

failed

Infinitives

Infinitives

to fail
to have failed
to be failing
to have been failing

Singular and plural for fail[feɪl]     

Singular
Plural
Singular
Common case
fail
fails
Possessive case
fail's
fails'
Plural
fails
fails'
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