Conjugation and declension of "derail" in English
Conjugation of the verb derail[dɪˈreɪl],
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 derailyou don't derail
he/she/it doesn't derail
we don't derail
you don't derail
they don't derail
Present Continuous
I am not derailingyou aren't derailing
he/she/it isn't derailing
we aren't derailing
you aren't derailing
they aren't derailing
Present Perfect
I haven't derailedyou haven't derailed
he/she/it hasn't derailed
we haven't derailed
you haven't derailed
they haven't derailed
Present Perfect Continuous
I haven't been derailingyou haven't been derailing
he/she/it hasn't been derailing
we haven't been derailing
you haven't been derailing
they haven't been derailing
Past Indefinite
I didn't derailyou didn't derail
he/she/it didn't derail
we didn't derail
you didn't derail
they didn't derail
Past Continuous
I wasn't derailingyou weren't derailing
he/she/it wasn't derailing
we weren't derailing
you weren't derailing
they weren't derailing
Past Perfect
I hadn't derailedyou hadn't derailed
he/she/it hadn't derailed
we hadn't derailed
you hadn't derailed
they hadn't derailed
Past Perfect Continuous
I hadn't been derailingyou hadn't been derailing
he/she/it hadn't been derailing
we hadn't been derailing
you hadn't been derailing
they hadn't been derailing
Future Indefinite
I shan't / won't derailyou won't derail
he/she/it won't derail
we shan't / won't derail
you won't derail
they won't derail
Future Continuous
I shan't / won't be derailingyou won't be derailing
he/she/it won't be derailing
we shan't / won't be derailing
you won't be derailing
they won't be derailing
Future Perfect
I shan't / won't have derailedyou won't have derailed
he/she/it won't have derailed
we shan't / won't have derailed
you won't have derailed
they won't have derailed
Future Perfect Continuous
I shan't / won't have been derailingyou won't have been derailing
he/she/it won't have been derailing
we shan't / won't have been derailing
you won't have been derailing
they won't have been derailing
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't derailyou wouldn't derail
he/she/it wouldn't derail
we wouldn't derail
you wouldn't derail
they wouldn't derail
Conditional Present Continuous
I wouldn't be derailingyou wouldn't be derailing
he/she/it wouldn't be derailing
we wouldn't be derailing
you wouldn't be derailing
they wouldn't be derailing
Conditional Perfect
I wouldn't have derailedyou wouldn't have derailed
he/she/it wouldn't have derailed
we wouldn't have derailed
you wouldn't have derailed
they wouldn't have derailed
Conditional Perfect Continuous
I wouldn't have been derailingyou wouldn't have been derailing
he/she/it wouldn't have been derailing
we wouldn't have been derailing
you wouldn't have been derailing
they wouldn't have been derailing
Participles
Present
Past
Infinitives
Infinitives
Popular English Verbs
Conjugation of English verbs
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