Conjugation and declension of "strengthening" in English
Conjugation of the verb strengthen[ˈstreŋθən],
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 strengthenyou don't strengthen
he/she/it doesn't strengthen
we don't strengthen
you don't strengthen
they don't strengthen
Present Continuous
I am not strengtheningyou aren't strengthening
he/she/it isn't strengthening
we aren't strengthening
you aren't strengthening
they aren't strengthening
Present Perfect
I haven't strengthenedyou haven't strengthened
he/she/it hasn't strengthened
we haven't strengthened
you haven't strengthened
they haven't strengthened
Present Perfect Continuous
I haven't been strengtheningyou haven't been strengthening
he/she/it hasn't been strengthening
we haven't been strengthening
you haven't been strengthening
they haven't been strengthening
Past Indefinite
I didn't strengthenyou didn't strengthen
he/she/it didn't strengthen
we didn't strengthen
you didn't strengthen
they didn't strengthen
Past Continuous
I wasn't strengtheningyou weren't strengthening
he/she/it wasn't strengthening
we weren't strengthening
you weren't strengthening
they weren't strengthening
Past Perfect
I hadn't strengthenedyou hadn't strengthened
he/she/it hadn't strengthened
we hadn't strengthened
you hadn't strengthened
they hadn't strengthened
Past Perfect Continuous
I hadn't been strengtheningyou hadn't been strengthening
he/she/it hadn't been strengthening
we hadn't been strengthening
you hadn't been strengthening
they hadn't been strengthening
Future Indefinite
I shan't / won't strengthenyou won't strengthen
he/she/it won't strengthen
we shan't / won't strengthen
you won't strengthen
they won't strengthen
Future Continuous
I shan't / won't be strengtheningyou won't be strengthening
he/she/it won't be strengthening
we shan't / won't be strengthening
you won't be strengthening
they won't be strengthening
Future Perfect
I shan't / won't have strengthenedyou won't have strengthened
he/she/it won't have strengthened
we shan't / won't have strengthened
you won't have strengthened
they won't have strengthened
Future Perfect Continuous
I shan't / won't have been strengtheningyou won't have been strengthening
he/she/it won't have been strengthening
we shan't / won't have been strengthening
you won't have been strengthening
they won't have been strengthening
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't strengthenyou wouldn't strengthen
he/she/it wouldn't strengthen
we wouldn't strengthen
you wouldn't strengthen
they wouldn't strengthen
Conditional Present Continuous
I wouldn't be strengtheningyou wouldn't be strengthening
he/she/it wouldn't be strengthening
we wouldn't be strengthening
you wouldn't be strengthening
they wouldn't be strengthening
Conditional Perfect
I wouldn't have strengthenedyou wouldn't have strengthened
he/she/it wouldn't have strengthened
we wouldn't have strengthened
you wouldn't have strengthened
they wouldn't have strengthened
Conditional Perfect Continuous
I wouldn't have been strengtheningyou wouldn't have been strengthening
he/she/it wouldn't have been strengthening
we wouldn't have been strengthening
you wouldn't have been strengthening
they wouldn't have been strengthening
Participles
Present
Past
Infinitives
Infinitives
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Conjugation of English verbs
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