| Presente (Present) "undergird" | I | undergird | |
| Presente continuo (Present Continuous) "undergird" | I | am undergirding | |
| Pasado simple (Simple past) "undergird" | I | undergirded | |
| Pasado continuo (Past Continuous) "undergird" | I | was undergirding | |
| Presente perfecto (Present perfect) "undergird" | I | have undergirded | |
| Presente perfecto continuo (Present perfect continuous) "undergird" | I | have been undergirding | |
| Pasado perfecto (Past perfect) "undergird" | I | had undergirded | |
| Pasado perfecto continuo (Past perfect continuous) "undergird" | I | had been undergirding | |
| Futuro (Future) "undergird" | I | will undergird | |
| Futuro continuo (Future continuous) "undergird" | I | will be undergirding | |
| Futuro perfecto (Future perfect) "undergird" | I | will have undergirded | |
| Futuro perfecto continuo (Future perfect continuous) "undergird" | I | will have been undergirding |