| Formy czasownika | |
| Podstawowa forma | undergird |
| Forma przeszła (np. w Past Simple, I did) | undergirt / undergirded |
| Past Participle (np. Past Perfect, I had done) | undergirt / undergirded |
| Present Participle (np. w czasach ciągłych, I was doing) | undergirding |
| Trzecia osoba liczby pojedyńczej | undergirds |