| Positive | frintlich |
| Comparative | frintelja |
| Superlative | frintlichsten |
| Positive | frintelja |
| Comparative | frinteljra |
| Superlative | frintlichsta |
| Positive | frintelje |
| Comparative | frinteljre |
| Superlative | frintlichste |
| Positive | frinteljet |
| Comparative | frinteljret |
| Superlative | frintlichstet |