underpinned
The past tense of underpin is underpinned
The Forms of Underpin
| Infinitive |
to underpin |
| Present Tense |
underpin / underpins |
| Past Tense |
underpinned |
| Present Participle |
underpinning |
| Past Participle |
underpinned |
Conjugate Underpin
Underpin in Present Simple (Indefinite) Tense
| Singular |
Plural |
| I underpin |
We underpin |
| You underpin |
You underpin |
| He/She/It underpins |
They underpin |
Underpin in Present Continuous (Progressive) Tense
| Singular |
Plural |
| I am underpinning |
We are underpinning |
| You are underpinning |
You are underpinning |
| He/She/It is underpinning |
They are underpinning |
Underpin in Present Perfect Tense
| Singular |
Plural |
| I have underpinned |
We have underpinned |
| You have underpinned |
You have underpinned |
| He/She/It has underpinned |
They have underpinned |
Underpin in Present Perfect Continuous Tense
| Singular |
Plural |
| I have been underpinning |
We have been underpinning |
| You have been underpinning |
You have been underpinning |
| He/She/It has been underpinning |
They have been underpinning |
Underpin in Past Simple (Indefinite) Tense
| Singular |
Plural |
| I underpinned |
We underpinned |
| You underpinned |
You underpinned |
| He/She/It underpinned |
They underpinned |
Underpin in Past Continuous (Progressive) Tense
| Singular |
Plural |
| I was underpinning |
We were underpinning |
| You were underpinning |
You were underpinning |
| He/She/It was underpinning |
They were underpinning |
Underpin in Past Perfect Tense
| Singular |
Plural |
| I had underpinned |
We had underpinned |
| You had underpinned |
You had underpinned |
| He/She/It had underpinned |
They had underpinned |
Underpin in Past Perfect Continuous Tense
| Singular |
Plural |
| I had been underpinning |
We had been underpinning |
| You had been underpinning |
You had been underpinning |
| He/She/It had been underpinning |
They had been underpinning |
Underpin in Future Simple (Indefinite) Tense
| Singular |
Plural |
| I will underpin |
We will underpin |
| You will underpin |
You will underpin |
| He/She/It will underpin |
They will underpin |
Underpin in Future Continuous (Progressive) Tense
| Singular |
Plural |
| I will be underpinning |
We will be underpinning |
| You will be underpinning |
You will be underpinning |
| He/She/It will be underpinning |
They will be underpinning |
Underpin in Future Perfect Tense
| Singular |
Plural |
| I will have underpinned |
We will have underpinned |
| You will have underpinned |
You will have underpinned |
| He/She/It will have underpinned |
They will have underpinned |
Underpin in Future Perfect Continuous Tense
| Singular |
Plural |
| I will have been underpinning |
We will have been underpinning |
| You will have been underpinning |
You will have been underpinning |
| He/She/It will have been underpinning |
They will have been underpinning |
