| Presente (Present) "undergird" | I | undergird | |
| Presente Progressivo (Present Continuous) "undergird" | I | am undergirding | |
| Passato semplice (Simple past) "undergird" | I | undergirded | |
| Past Continuous (Past Continuous) "undergird" | I | was undergirding | |
| Regalo perfetto (Present perfect) "undergird" | I | have undergirded | |
| Trapassato prossimo (Present perfect continuous) "undergird" | I | have been undergirding | |
| Passato perfetto (Past perfect) "undergird" | I | had undergirded | |
| Trapassato remoto (Past perfect continuous) "undergird" | I | had been undergirding | |
| Futuro (Future) "undergird" | I | will undergird | |
| Trapassato remoto (Future continuous) "undergird" | I | will be undergirding | |
| Futuro perfetto (Future perfect) "undergird" | I | will have undergirded | |
| Congiuntivo (Future perfect continuous) "undergird" | I | will have been undergirding |