To add together.
Infinitivesum
Past simplesummed
Past participlesummed
-ing formsumming
Full conjugation of the English verb to sum (past simple summed,
past participle summed):
present simple and continuous, past simple and continuous, present perfect, past perfect,
future, conditional, subjunctive and imperative, with all persons.
Indicative
Present simple
I
sum
you
sum
he/she/it
sums
we
sum
you
sum
they
sum
Present continuous
I
am summing
you
are summing
he/she/it
is summing
we
are summing
you
are summing
they
are summing
Present perfect
I
have summed
you
have summed
he/she/it
has summed
we
have summed
you
have summed
they
have summed
Present perfect continuous
I
have been summing
you
have been summing
he/she/it
has been summing
we
have been summing
you
have been summing
they
have been summing
Past simple
I
summed
you
summed
he/she/it
summed
we
summed
you
summed
they
summed
Past continuous
I
was summing
you
were summing
he/she/it
was summing
we
were summing
you
were summing
they
were summing
Past perfect
I
had summed
you
had summed
he/she/it
had summed
we
had summed
you
had summed
they
had summed
Past perfect continuous
I
had been summing
you
had been summing
he/she/it
had been summing
we
had been summing
you
had been summing
they
had been summing
Future simple
I
will sum
you
will sum
he/she/it
will sum
we
will sum
you
will sum
they
will sum
Future continuous
I
will be summing
you
will be summing
he/she/it
will be summing
we
will be summing
you
will be summing
they
will be summing
Future perfect
I
will have summed
you
will have summed
he/she/it
will have summed
we
will have summed
you
will have summed
they
will have summed
Future perfect continuous
I
will have been summing
you
will have been summing
he/she/it
will have been summing
we
will have been summing
you
will have been summing
they
will have been summing
Conditional
Present
I
would sum
you
would sum
he/she/it
would sum
we
would sum
you
would sum
they
would sum
Present continuous
I
would be summing
you
would be summing
he/she/it
would be summing
we
would be summing
you
would be summing
they
would be summing
Perfect
I
would have summed
you
would have summed
he/she/it
would have summed
we
would have summed
you
would have summed
they
would have summed
Perfect continuous
I
would have been summing
you
would have been summing
he/she/it
would have been summing
we
would have been summing
you
would have been summing
they
would have been summing
Subjunctive
Present
that I
sum
that you
sum
that he/she/it
sum
that we
sum
that you
sum
that they
sum
Past
if I
summed
if you
summed
if he/she/it
summed
if we
summed
if you
summed
if they
summed
Imperative
Affirmative
you
sum
we
let's sum
Negative
you
don't sum
we
let's not sum
Non-finite forms
Infinitive
to sum
Perfect infinitive
to have summed
Present participle / gerund
summing
Past participle
summed
Conjugations: Wiktionary (via kaikki.org), adapted, licensed under CC BY-SA 4.0.