To be unsuccessful.
Infinitivefail
Past simplefailed
Past participlefailed
-ing formfailing
Full conjugation of the English verb to fail (past simple failed,
past participle failed):
present simple and continuous, past simple and continuous, present perfect, past perfect,
future, conditional, subjunctive and imperative, with all persons.
Indicative
Present simple
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 simple
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 simple
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
Conditional
Present
I
would fail
you
would fail
he/she/it
would fail
we
would fail
you
would fail
they
would fail
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
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
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
Subjunctive
Present
that I
fail
that you
fail
that he/she/it
fail
that we
fail
that you
fail
that they
fail
Past
if I
failed
if you
failed
if he/she/it
failed
if we
failed
if you
failed
if they
failed
Imperative
Affirmative
you
fail
we
let's fail
Negative
you
don't fail
we
let's not fail
Non-finite forms
Infinitive
to fail
Perfect infinitive
to have failed
Present participle / gerund
failing
Past participle
failed
Conjugations: Wiktionary (via kaikki.org), adapted, licensed under CC BY-SA 4.0.