| 1. | Base Form (Infinitive): | Diminish |
| 2. | Simple Past: | Diminished |
| 3. | Past Participle: | Diminished |
| 4. | Present Participle: | Diminishing |
| 5. | 3rd Person Singular: | Diminishes |

Diminish past tense
| Diminished |
| Diminished is the past tense of the word diminish. |
Diminish past participle
| Diminished |
| Diminished is the past participle of the word diminish. |
Diminish verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Diminish | Diminished | Diminished | Diminishing |
Conjugation of Diminish
| Simple / Indefinite Present Tense |
| I diminish. |
| He/She/It diminishes. |
| You/We/They diminish. |
| Simple Past Tense |
| I diminished. |
| He/She/It diminished. |
| You/We/They diminished. |
| Simple Future Tense |
| I will/shall diminish. |
| He/She/It will diminish. |
| You/We/They will/shall diminish. |
| Present Continuous Tense |
| I am diminishing. |
| He/She/It is diminishing. |
| You/We/They are diminishing. |
| Past Continuous Tense |
| I was diminishing. |
| He/She/It was diminishing. |
| You/We/They were diminishing. |
| Future Continuous Tense |
| I will be diminishing. |
| He/She/It will be diminishing. |
| You/We/They will be diminishing. |
| Present Perfect Tense |
| I have diminished. |
| He/She/It has diminished. |
| You/We/They have diminished. |
| Past Perfect Tense |
| I had diminished. |
| He/She/It had diminished. |
| You/We/They had diminished. |
| Future Perfect Tense |
| I will have diminished. |
| He/She/It will have diminished. |
| You/We/They will have diminished. |
| Present Perfect Continuous Tense |
| I have been diminishing. |
| He/She/It has been diminishing. |
| You/We/They have been diminishing. |
| Past Perfect Continuous Tense |
| I had been diminishing. |
| He/She/It had been diminishing. |
| You/We/They had been diminishing. |
| Future Perfect Continuous Tense |
| I will have been diminishing. |
| He/She/It will have been diminishing. |
| You/We/They will have been diminishing. |