| Simple | Progressive | Perfect | Progressive |
| Present |
| I discolour |
| you discolour |
| he/she/it discolours |
| we discolour |
| you all discolour |
| they discolour |
|
| I am discolouring |
| you are discolouring |
| he/she/it is discolouring |
| we are discolouring |
| you all are discolouring |
| they are discolouring |
|
| I have discoloured |
| you have discoloured |
| he/she/it has discoloured |
| we have discoloured |
| you all have discoloured |
| they have discoloured |
|
| I have been discolouring |
| you have been discolouring |
| he/she/it has been discolouring |
| we have been discolouring |
| you all have been discolouring |
| they have been discolouring |
|
| Past |
| I discoloured |
| you discoloured |
| he/she/it discoloured |
| we discoloured |
| you all discoloured |
| they discoloured |
|
| I was discolouring |
| you were discolouring |
| he/she/it was discolouring |
| we were discolouring |
| you all were discolouring |
| they were discolouring |
|
| I had discoloured |
| you had discoloured |
| he/she/it had discoloured |
| we had discoloured |
| you all had discoloured |
| they had discoloured |
|
| I had been discolouring |
| you had been discolouring |
| he/she/it had been discolouring |
| we had been discolouring |
| you all had been discolouring |
| they had been discolouring |
|
| Future |
| I will discolour |
| you will discolour |
| he/she/it will discolour |
| we will discolour |
| you all will discolour |
| they will discolour |
|
| I will be discolouring |
| you will be discolouring |
| he/she/it will be discolouring |
| we are discolouring |
| you all will be discolouring |
| they will be discolouring |
|
| I will have discoloured |
| you will have discoloured |
| he/she/it will have discoloured |
| we will have discoloured |
| you all will have discoloured |
| they will have discoloured |
|
| I will have been discolouring |
| you will have been discolouring |
| he/she/it will have been discolouring |
| we will have been discolouring |
| you all will have been discolouring |
| they will have been discolouring |
|
