Conjugation of the verb "underpin"
Conjugation of the verb underpin[ˌʌndəˈpɪn],
regular 
Indicative
Present Indefinite
Present Continuous
Present Perfect
Present Perfect Continuous
Past Indefinite
Past Continuous
Past Perfect
Past Perfect Continuous
Future Indefinite
Future Continuous
Future Perfect
Future Perfect Continuous
Indicative
Present Indefinite
I don't underpinyou don't underpin
he/she/it doesn't underpin
we don't underpin
you don't underpin
they don't underpin
Present Continuous
I am not underpinningyou aren't underpinning
he/she/it isn't underpinning
we aren't underpinning
you aren't underpinning
they aren't underpinning
Present Perfect
I haven't underpinnedyou haven't underpinned
he/she/it hasn't underpinned
we haven't underpinned
you haven't underpinned
they haven't underpinned
Present Perfect Continuous
I haven't been underpinningyou haven't been underpinning
he/she/it hasn't been underpinning
we haven't been underpinning
you haven't been underpinning
they haven't been underpinning
Past Indefinite
I didn't underpinyou didn't underpin
he/she/it didn't underpin
we didn't underpin
you didn't underpin
they didn't underpin
Past Continuous
I wasn't underpinningyou weren't underpinning
he/she/it wasn't underpinning
we weren't underpinning
you weren't underpinning
they weren't underpinning
Past Perfect
I hadn't underpinnedyou hadn't underpinned
he/she/it hadn't underpinned
we hadn't underpinned
you hadn't underpinned
they hadn't underpinned
Past Perfect Continuous
I hadn't been underpinningyou hadn't been underpinning
he/she/it hadn't been underpinning
we hadn't been underpinning
you hadn't been underpinning
they hadn't been underpinning
Future Indefinite
I shan't / won't underpinyou won't underpin
he/she/it won't underpin
we shan't / won't underpin
you won't underpin
they won't underpin
Future Continuous
I shan't / won't be underpinningyou won't be underpinning
he/she/it won't be underpinning
we shan't / won't be underpinning
you won't be underpinning
they won't be underpinning
Future Perfect
I shan't / won't have underpinnedyou won't have underpinned
he/she/it won't have underpinned
we shan't / won't have underpinned
you won't have underpinned
they won't have underpinned
Future Perfect Continuous
I shan't / won't have been underpinningyou won't have been underpinning
he/she/it won't have been underpinning
we shan't / won't have been underpinning
you won't have been underpinning
they won't have been underpinning
Indicative
Present Indefinite
do I underpin?do you underpin?
does he/she/it underpin?
do we underpin?
do you underpin?
do they underpin?
Present Continuous
am I underpinning?are you underpinning?
is he/she/it underpinning?
are we underpinning?
are you underpinning?
are they underpinning?
Present Perfect
have I underpinned?have you underpinned?
has he/she/it underpinned?
have we underpinned?
have you underpinned?
have they underpinned?
Present Perfect Continuous
have I been underpinning?have you been underpinning?
has he/she/it been underpinning?
have we been underpinning?
have you been underpinning?
have they been underpinning?
Past Indefinite
did I underpin?did you underpin?
did he/she/it underpin?
did we underpin?
did you underpin?
did they underpin?
Past Continuous
was I underpinning?were you underpinning?
was he/she/it underpinning?
were we underpinning?
were you underpinning?
were they underpinning?
Past Perfect
had I underpinned?had you underpinned?
had he/she/it underpinned?
had we underpinned?
had you underpinned?
had they underpinned?
Past Perfect Continuous
had I been underpinning?had you been underpinning?
had he/she/it been underpinning?
had we been underpinning?
had you been underpinning?
had they been underpinning?
Future Indefinite
will I underpin?will you underpin?
will he/she/it underpin?
will we underpin?
will you underpin?
will they underpin?
Future Continuous
will I be underpinning?will you be underpinning?
will he/she/it be underpinning?
will we be underpinning?
will you be underpinning?
will they be underpinning?
Future Perfect
will I have underpinned?will you have underpinned?
will he/she/it have underpinned?
will we have underpinned?
will you have underpinned?
will they have underpinned?
Future Perfect Continuous
will I have been underpinning?will you have been underpinning?
will he/she/it have been underpinning?
will we have been underpinning?
will you have been underpinning?
will they have been underpinning?
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't underpinyou wouldn't underpin
he/she/it wouldn't underpin
we wouldn't underpin
you wouldn't underpin
they wouldn't underpin
Conditional Present Continuous
I wouldn't be underpinningyou wouldn't be underpinning
he/she/it wouldn't be underpinning
we wouldn't be underpinning
you wouldn't be underpinning
they wouldn't be underpinning
Conditional Perfect
I wouldn't have underpinnedyou wouldn't have underpinned
he/she/it wouldn't have underpinned
we wouldn't have underpinned
you wouldn't have underpinned
they wouldn't have underpinned
Conditional Perfect Continuous
I wouldn't have been underpinningyou wouldn't have been underpinning
he/she/it wouldn't have been underpinning
we wouldn't have been underpinning
you wouldn't have been underpinning
they wouldn't have been underpinning
Conditional
Conditional Present
would I underpin?would you underpin?
would he/she/it underpin?
would we underpin?
would you underpin?
would they underpin?
Conditional Present Continuous
would I be underpinning?would you be underpinning?
would he/she/it be underpinning?
would we be underpinning?
would you be underpinning?
would they be underpinning?
Conditional Perfect
would I have underpinned?would you have underpinned?
would he/she/it have underpinned?
would we have underpinned?
would you have underpinned?
would they have underpinned?
Conditional Perfect Continuous
would I have been underpinning?would you have been underpinning?
would he/she/it have been underpinning?
would we have been underpinning?
would you have been underpinning?
would they have been underpinning?
Participles
Present
Past
Infinitives
Infinitives
Popular English Verbs
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