| Simple | Progressive | Perfect | Progressive |
| Present |
| I flounder |
| you flounder |
| he/she/it flounders |
| we flounder |
| you all flounder |
| they flounder |
|
| I am floundering |
| you are floundering |
| he/she/it is floundering |
| we are floundering |
| you all are floundering |
| they are floundering |
|
| I have floundered |
| you have floundered |
| he/she/it has floundered |
| we have floundered |
| you all have floundered |
| they have floundered |
|
| I have been floundering |
| you have been floundering |
| he/she/it has been floundering |
| we have been floundering |
| you all have been floundering |
| they have been floundering |
|
| Past |
| I floundered |
| you floundered |
| he/she/it floundered |
| we floundered |
| you all floundered |
| they floundered |
|
| I was floundering |
| you were floundering |
| he/she/it was floundering |
| we were floundering |
| you all were floundering |
| they were floundering |
|
| I had floundered |
| you had floundered |
| he/she/it had floundered |
| we had floundered |
| you all had floundered |
| they had floundered |
|
| I had been floundering |
| you had been floundering |
| he/she/it had been floundering |
| we had been floundering |
| you all had been floundering |
| they had been floundering |
|
| Future |
| I will flounder |
| you will flounder |
| he/she/it will flounder |
| we will flounder |
| you all will flounder |
| they will flounder |
|
| I will be floundering |
| you will be floundering |
| he/she/it will be floundering |
| we are floundering |
| you all will be floundering |
| they will be floundering |
|
| I will have floundered |
| you will have floundered |
| he/she/it will have floundered |
| we will have floundered |
| you all will have floundered |
| they will have floundered |
|
| I will have been floundering |
| you will have been floundering |
| he/she/it will have been floundering |
| we will have been floundering |
| you all will have been floundering |
| they will have been floundering |
|
