Conjugate verb "slacken" in English
Conjugation of the verb slacken[ˈslækən],
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 slackenyou don't slacken
he/she/it doesn't slacken
we don't slacken
you don't slacken
they don't slacken
Present Continuous
I am not slackeningyou aren't slackening
he/she/it isn't slackening
we aren't slackening
you aren't slackening
they aren't slackening
Present Perfect
I haven't slackenedyou haven't slackened
he/she/it hasn't slackened
we haven't slackened
you haven't slackened
they haven't slackened
Present Perfect Continuous
I haven't been slackeningyou haven't been slackening
he/she/it hasn't been slackening
we haven't been slackening
you haven't been slackening
they haven't been slackening
Past Indefinite
I didn't slackenyou didn't slacken
he/she/it didn't slacken
we didn't slacken
you didn't slacken
they didn't slacken
Past Continuous
I wasn't slackeningyou weren't slackening
he/she/it wasn't slackening
we weren't slackening
you weren't slackening
they weren't slackening
Past Perfect
I hadn't slackenedyou hadn't slackened
he/she/it hadn't slackened
we hadn't slackened
you hadn't slackened
they hadn't slackened
Past Perfect Continuous
I hadn't been slackeningyou hadn't been slackening
he/she/it hadn't been slackening
we hadn't been slackening
you hadn't been slackening
they hadn't been slackening
Future Indefinite
I shan't / won't slackenyou won't slacken
he/she/it won't slacken
we shan't / won't slacken
you won't slacken
they won't slacken
Future Continuous
I shan't / won't be slackeningyou won't be slackening
he/she/it won't be slackening
we shan't / won't be slackening
you won't be slackening
they won't be slackening
Future Perfect
I shan't / won't have slackenedyou won't have slackened
he/she/it won't have slackened
we shan't / won't have slackened
you won't have slackened
they won't have slackened
Future Perfect Continuous
I shan't / won't have been slackeningyou won't have been slackening
he/she/it won't have been slackening
we shan't / won't have been slackening
you won't have been slackening
they won't have been slackening
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't slackenyou wouldn't slacken
he/she/it wouldn't slacken
we wouldn't slacken
you wouldn't slacken
they wouldn't slacken
Conditional Present Continuous
I wouldn't be slackeningyou wouldn't be slackening
he/she/it wouldn't be slackening
we wouldn't be slackening
you wouldn't be slackening
they wouldn't be slackening
Conditional Perfect
I wouldn't have slackenedyou wouldn't have slackened
he/she/it wouldn't have slackened
we wouldn't have slackened
you wouldn't have slackened
they wouldn't have slackened
Conditional Perfect Continuous
I wouldn't have been slackeningyou wouldn't have been slackening
he/she/it wouldn't have been slackening
we wouldn't have been slackening
you wouldn't have been slackening
they wouldn't have been slackening
Participles
Present
Past
Infinitives
Infinitives
Popular English Verbs
Conjugation of English verbs
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