| Present "impede" | I | impede | |
| Present Continuous "impede" | I | am impeding | |
| Simple past "impede" | I | impeded | |
| Past Continuous "impede" | I | was impeding | |
| Present perfect "impede" | I | have impeded | |
| Present perfect continuous "impede" | I | have been impeding | |
| Past perfect "impede" | I | had impeded | |
| Past perfect continuous "impede" | I | had been impeding | |
| Future "impede" | I | will impede | |
| Future continuous "impede" | I | will be impeding | |
| Future perfect "impede" | I | will have impeded | |
| Future perfect continuous "impede" | I | will have been impeding |