regular model: work
verbs ending in -e: like

do - model verb
Verbs that follow
this model:
  1. misdo
  2. outdo
  3. overdo
  4. redo
  5. undo

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undo

It is conjugated like: do
infinitive:
present participle:
past participle:
(to) undo
undoing
undone
definition
in Spanish
in French
in Italian

Indicative

presentAlso known as:
present simple or simple present
Iundo
youundo
he, she, itundoes
weundo
youundo
theyundo
simple pastAlso known as:
past simple or preterit
Iundid
youundid
he, she, itundid
weundid
youundid
theyundid
future
Iwill undo
youwill undo
he, she, itwill undo
wewill undo
youwill undo
theywill undo

Perfect tenses

present perfect
Ihave undone
youhave undone
he, she, ithas undone
wehave undone
youhave undone
theyhave undone
past perfectAlso known as:
pluperfect
Ihad undone
youhad undone
he, she, ithad undone
wehad undone
youhad undone
theyhad undone
future perfect
Iwill have undone
youwill have undone
he, she, itwill have undone
wewill have undone
youwill have undone
theywill have undone

Continuous (progressive) and emphatic tenses

present continuous
Iam undoing
youare undoing
he, she, itis undoing
weare undoing
youare undoing
theyare undoing
past continuous
Iwas undoing
youwere undoing
he, she, itwas undoing
wewere undoing
youwere undoing
theywere undoing
present emphatic
Ido undo
youdo undo
he, she, itdoes undo
wedo undo
youdo undo
theydo undo
past emphatic
Idid undo
youdid undo
he, she, itdid undo
wedid undo
youdid undo
theydid undo

Compound continuous (progressive) tenses

present perfect
Ihave been undoing
youhave been undoing
he, she, ithas been undoing
wehave been undoing
youhave been undoing
theyhave been undoing
past perfect
Ihad been undoing
youhad been undoing
he, she, ithad been undoing
wehad been undoing
youhad been undoing
theyhad been undoing
future
Iwill be undoing
youwill be undoing
he, she, itwill be undoing
wewill be undoing
youwill be undoing
theywill be undoing
future perfect
Iwill have been undoing
youwill have been undoing
he, she, itwill have been undoing
wewill have been undoing
youwill have been undoing
theywill have been undoing

Conditional

present
Iwould undo
youwould undo
he, she, itwould undo
wewould undo
youwould undo
theywould undo
perfectAlso known as:
past conditional
Iwould have undone
youwould have undone
he, she, itwould have undone
wewould have undone
youwould have undone
theywould have undone
present continuous
Iwould be undoing
youwould be undoing
he, she, itwould be undoing
wewould be undoing
youwould be undoing
theywould be undoing
perfect continuous
Iwould have been undoing
youwould have been undoing
he, she, itwould have been undoing
wewould have been undoing
youwould have been undoing
theywould have been undoing

Imperative

present
(you)undo!
(we)let's undo!
(you)undo!

Subjunctive

present
Iundo
youundo
he, she, itundo
weundo
youundo
theyundo
past
Iundid
youundid
he, she, itundid
weundid
youundid
theyundid
past perfectAlso known as:
pluperfect subjunctive
Ihad undone
youhad undone
he, she, ithad undone
wehad undone
youhad undone
theyhad undone
future
Ishould undo
youshould undo
he, she, itshould undo
weshould undo
youshould undo
theyshould undo

*Blue letters in conjugations are irregular forms. (example)
*Red letters in conjugations are exceptions to the model. (example)

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