Conjugate verb "underpin" in English
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
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
Participles
Present
Past
Infinitives
Infinitives
Popular English Verbs
Conjugation of English verbs
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