The past tense of substantiate is substantiated
| Infinitive | to substantiate |
| Present Tense | substantiate / substantiates |
| Past Tense | substantiated |
| Present Participle | substantiating |
| Past Participle | substantiated |
| Singular | Plural |
|---|---|
| I substantiate | We substantiate |
| You substantiate | You substantiate |
| He/She/It substantiates | They substantiate |
| Singular | Plural |
|---|---|
| I am substantiating | We are substantiating |
| You are substantiating | You are substantiating |
| He/She/It is substantiating | They are substantiating |
| Singular | Plural |
|---|---|
| I have substantiated | We have substantiated |
| You have substantiated | You have substantiated |
| He/She/It has substantiated | They have substantiated |
| Singular | Plural |
|---|---|
| I have been substantiating | We have been substantiating |
| You have been substantiating | You have been substantiating |
| He/She/It has been substantiating | They have been substantiating |
| Singular | Plural |
|---|---|
| I substantiated | We substantiated |
| You substantiated | You substantiated |
| He/She/It substantiated | They substantiated |
| Singular | Plural |
|---|---|
| I was substantiating | We were substantiating |
| You were substantiating | You were substantiating |
| He/She/It was substantiating | They were substantiating |
| Singular | Plural |
|---|---|
| I had substantiated | We had substantiated |
| You had substantiated | You had substantiated |
| He/She/It had substantiated | They had substantiated |
| Singular | Plural |
|---|---|
| I had been substantiating | We had been substantiating |
| You had been substantiating | You had been substantiating |
| He/She/It had been substantiating | They had been substantiating |
| Singular | Plural |
|---|---|
| I will substantiate | We will substantiate |
| You will substantiate | You will substantiate |
| He/She/It will substantiate | They will substantiate |
| Singular | Plural |
|---|---|
| I will be substantiating | We will be substantiating |
| You will be substantiating | You will be substantiating |
| He/She/It will be substantiating | They will be substantiating |
| Singular | Plural |
|---|---|
| I will have substantiated | We will have substantiated |
| You will have substantiated | You will have substantiated |
| He/She/It will have substantiated | They will have substantiated |
| Singular | Plural |
|---|---|
| I will have been substantiating | We will have been substantiating |
| You will have been substantiating | You will have been substantiating |
| He/She/It will have been substantiating | They will have been substantiating |
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