Conjugation of "to undo" (undo – undid – undone) – All Tenses

Infinitiveundo

Past simpleundid

Past participleundone

-ing formundoing

Full conjugation of the English verb to undo (past simple undid, past participle undone): present simple and continuous, past simple and continuous, present perfect, past perfect, future, conditional, subjunctive and imperative, with all persons.

Indicative

Present simple

I undo

you undo

he/she/it undoes

we undo

you undo

they undo

Present continuous

I am undoing

you are undoing

he/she/it is undoing

we are undoing

you are undoing

they are undoing

Present perfect

I have undone

you have undone

he/she/it has undone

we have undone

you have undone

they have undone

Present perfect continuous

I have been undoing

you have been undoing

he/she/it has been undoing

we have been undoing

you have been undoing

they have been undoing

Past simple

I undid

you undid

he/she/it undid

we undid

you undid

they undid

Past continuous

I was undoing

you were undoing

he/she/it was undoing

we were undoing

you were undoing

they were undoing

Past perfect

I had undone

you had undone

he/she/it had undone

we had undone

you had undone

they had undone

Past perfect continuous

I had been undoing

you had been undoing

he/she/it had been undoing

we had been undoing

you had been undoing

they had been undoing

Future simple

I will undo

you will undo

he/she/it will undo

we will undo

you will undo

they will undo

Future continuous

I will be undoing

you will be undoing

he/she/it will be undoing

we will be undoing

you will be undoing

they will be undoing

Future perfect

I will have undone

you will have undone

he/she/it will have undone

we will have undone

you will have undone

they will have undone

Future perfect continuous

I will have been undoing

you will have been undoing

he/she/it will have been undoing

we will have been undoing

you will have been undoing

they will have been undoing

Conditional

Present

I would undo

you would undo

he/she/it would undo

we would undo

you would undo

they would undo

Present continuous

I would be undoing

you would be undoing

he/she/it would be undoing

we would be undoing

you would be undoing

they would be undoing

Perfect

I would have undone

you would have undone

he/she/it would have undone

we would have undone

you would have undone

they would have undone

Perfect continuous

I would have been undoing

you would have been undoing

he/she/it would have been undoing

we would have been undoing

you would have been undoing

they would have been undoing

Subjunctive

Present

that I undo

that you undo

that he/she/it undo

that we undo

that you undo

that they undo

Past

if I undid

if you undid

if he/she/it undid

if we undid

if you undid

if they undid

Imperative

Affirmative

you undo

we let's undo

Negative

you don't undo

we let's not undo

Non-finite forms

Infinitive

to undo

Perfect infinitive

to have undone

Present participle / gerund

undoing

Past participle

undone

Conjugations: Wiktionary (via kaikki.org), adapted, licensed under CC BY-SA 4.0.