Conjugation of "to co-author" (co-author – co-authored – co-authored) – All Tenses

Infinitiveco-author

Past simpleco-authored

Past participleco-authored

-ing formco-authoring

Full conjugation of the English verb to co-author (past simple co-authored, past participle co-authored): present simple and continuous, past simple and continuous, present perfect, past perfect, future, conditional, subjunctive and imperative, with all persons.

Indicative

Present simple

I co-author

you co-author

he/she/it co-authors

we co-author

you co-author

they co-author

Present continuous

I am co-authoring

you are co-authoring

he/she/it is co-authoring

we are co-authoring

you are co-authoring

they are co-authoring

Present perfect

I have co-authored

you have co-authored

he/she/it has co-authored

we have co-authored

you have co-authored

they have co-authored

Present perfect continuous

I have been co-authoring

you have been co-authoring

he/she/it has been co-authoring

we have been co-authoring

you have been co-authoring

they have been co-authoring

Past simple

I co-authored

you co-authored

he/she/it co-authored

we co-authored

you co-authored

they co-authored

Past continuous

I was co-authoring

you were co-authoring

he/she/it was co-authoring

we were co-authoring

you were co-authoring

they were co-authoring

Past perfect

I had co-authored

you had co-authored

he/she/it had co-authored

we had co-authored

you had co-authored

they had co-authored

Past perfect continuous

I had been co-authoring

you had been co-authoring

he/she/it had been co-authoring

we had been co-authoring

you had been co-authoring

they had been co-authoring

Future simple

I will co-author

you will co-author

he/she/it will co-author

we will co-author

you will co-author

they will co-author

Future continuous

I will be co-authoring

you will be co-authoring

he/she/it will be co-authoring

we will be co-authoring

you will be co-authoring

they will be co-authoring

Future perfect

I will have co-authored

you will have co-authored

he/she/it will have co-authored

we will have co-authored

you will have co-authored

they will have co-authored

Future perfect continuous

I will have been co-authoring

you will have been co-authoring

he/she/it will have been co-authoring

we will have been co-authoring

you will have been co-authoring

they will have been co-authoring

Conditional

Present

I would co-author

you would co-author

he/she/it would co-author

we would co-author

you would co-author

they would co-author

Present continuous

I would be co-authoring

you would be co-authoring

he/she/it would be co-authoring

we would be co-authoring

you would be co-authoring

they would be co-authoring

Perfect

I would have co-authored

you would have co-authored

he/she/it would have co-authored

we would have co-authored

you would have co-authored

they would have co-authored

Perfect continuous

I would have been co-authoring

you would have been co-authoring

he/she/it would have been co-authoring

we would have been co-authoring

you would have been co-authoring

they would have been co-authoring

Subjunctive

Present

that I co-author

that you co-author

that he/she/it co-author

that we co-author

that you co-author

that they co-author

Past

if I co-authored

if you co-authored

if he/she/it co-authored

if we co-authored

if you co-authored

if they co-authored

Imperative

Affirmative

you co-author

we let's co-author

Negative

you don't co-author

we let's not co-author

Non-finite forms

Infinitive

to co-author

Perfect infinitive

to have co-authored

Present participle / gerund

co-authoring

Past participle

co-authored

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