| 1. | Base Form (Infinitive): | Undo |
| 2. | Simple Past: | Undid |
| 3. | Past Participle: | Undone |
| 4. | Present Participle: | Undoing |
| 5. | 3rd Person Singular: | Undoes |
Undo past tense
| Undid |
| Undid is the past tense of the word undo. |
Undo past participle
| Undone |
| Undone is the past participle of the word undo. |
Undo verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Undo | Undid | Undone | Undoing |
Conjugation of Undo
| Simple / Indefinite Present Tense |
| I undo. |
| He/She/It undoes. |
| You/We/They undo. |
| Simple Past Tense |
| I undid. |
| He/She/It undid. |
| You/We/They undid. |
| Simple Future Tense |
| I will/shall undo. |
| He/She/It will undo. |
| You/We/They will/shall undo. |
| Present Continuous Tense |
| I am undoing. |
| He/She/It is undoing. |
| You/We/They are undoing. |
| Past Continuous Tense |
| I was undoing. |
| He/She/It was undoing. |
| You/We/They were undoing. |
| Future Continuous Tense |
| I will be undoing. |
| He/She/It will be undoing. |
| You/We/They will be undoing. |
| Present Perfect Tense |
| I have undone. |
| He/She/It has undone. |
| You/We/They have undone. |
| Past Perfect Tense |
| I had undone. |
| He/She/It had undone. |
| You/We/They had undone. |
| Future Perfect Tense |
| I will have undone. |
| He/She/It will have undone. |
| You/We/They will have undone. |
| Present Perfect Continuous Tense |
| I have been undoing. |
| He/She/It has been undoing. |
| You/We/They have been undoing. |
| Past Perfect Continuous Tense |
| I had been undoing. |
| He/She/It had been undoing. |
| You/We/They had been undoing. |
| Future Perfect Continuous Tense |
| I will have been undoing. |
| He/She/It will have been undoing. |
| You/We/They will have been undoing. |
More verb past tense
