Conjugation and declension of "sign" in English
Conjugation of the verb sign[saɪn],
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 signyou don't sign
he/she/it doesn't sign
we don't sign
you don't sign
they don't sign
Present Continuous
I am not signingyou aren't signing
he/she/it isn't signing
we aren't signing
you aren't signing
they aren't signing
Present Perfect
I haven't signedyou haven't signed
he/she/it hasn't signed
we haven't signed
you haven't signed
they haven't signed
Present Perfect Continuous
I haven't been signingyou haven't been signing
he/she/it hasn't been signing
we haven't been signing
you haven't been signing
they haven't been signing
Past Indefinite
I didn't signyou didn't sign
he/she/it didn't sign
we didn't sign
you didn't sign
they didn't sign
Past Continuous
I wasn't signingyou weren't signing
he/she/it wasn't signing
we weren't signing
you weren't signing
they weren't signing
Past Perfect
I hadn't signedyou hadn't signed
he/she/it hadn't signed
we hadn't signed
you hadn't signed
they hadn't signed
Past Perfect Continuous
I hadn't been signingyou hadn't been signing
he/she/it hadn't been signing
we hadn't been signing
you hadn't been signing
they hadn't been signing
Future Indefinite
I shan't / won't signyou won't sign
he/she/it won't sign
we shan't / won't sign
you won't sign
they won't sign
Future Continuous
I shan't / won't be signingyou won't be signing
he/she/it won't be signing
we shan't / won't be signing
you won't be signing
they won't be signing
Future Perfect
I shan't / won't have signedyou won't have signed
he/she/it won't have signed
we shan't / won't have signed
you won't have signed
they won't have signed
Future Perfect Continuous
I shan't / won't have been signingyou won't have been signing
he/she/it won't have been signing
we shan't / won't have been signing
you won't have been signing
they won't have been signing
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't signyou wouldn't sign
he/she/it wouldn't sign
we wouldn't sign
you wouldn't sign
they wouldn't sign
Conditional Present Continuous
I wouldn't be signingyou wouldn't be signing
he/she/it wouldn't be signing
we wouldn't be signing
you wouldn't be signing
they wouldn't be signing
Conditional Perfect
I wouldn't have signedyou wouldn't have signed
he/she/it wouldn't have signed
we wouldn't have signed
you wouldn't have signed
they wouldn't have signed
Conditional Perfect Continuous
I wouldn't have been signingyou wouldn't have been signing
he/she/it wouldn't have been signing
we wouldn't have been signing
you wouldn't have been signing
they wouldn't have been signing
Participles
Present
Past
Infinitives
Infinitives
Popular English Verbs
Conjugation of English verbs
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