| Simple | Progressive | Perfect | Progressive |
| Present |
| I retard |
| you retard |
| he/she/it retards |
| we retard |
| you all retard |
| they retard |
|
| I am retarding |
| you are retarding |
| he/she/it is retarding |
| we are retarding |
| you all are retarding |
| they are retarding |
|
| I have retarded |
| you have retarded |
| he/she/it has retarded |
| we have retarded |
| you all have retarded |
| they have retarded |
|
| I have been retarding |
| you have been retarding |
| he/she/it has been retarding |
| we have been retarding |
| you all have been retarding |
| they have been retarding |
|
| Past |
| I retarded |
| you retarded |
| he/she/it retarded |
| we retarded |
| you all retarded |
| they retarded |
|
| I was retarding |
| you were retarding |
| he/she/it was retarding |
| we were retarding |
| you all were retarding |
| they were retarding |
|
| I had retarded |
| you had retarded |
| he/she/it had retarded |
| we had retarded |
| you all had retarded |
| they had retarded |
|
| I had been retarding |
| you had been retarding |
| he/she/it had been retarding |
| we had been retarding |
| you all had been retarding |
| they had been retarding |
|
| Future |
| I will retard |
| you will retard |
| he/she/it will retard |
| we will retard |
| you all will retard |
| they will retard |
|
| I will be retarding |
| you will be retarding |
| he/she/it will be retarding |
| we are retarding |
| you all will be retarding |
| they will be retarding |
|
| I will have retarded |
| you will have retarded |
| he/she/it will have retarded |
| we will have retarded |
| you all will have retarded |
| they will have retarded |
|
| I will have been retarding |
| you will have been retarding |
| he/she/it will have been retarding |
| we will have been retarding |
| you all will have been retarding |
| they will have been retarding |
|
