Inherited from Sanskrit द्वीपिन् (dvīpin).[1] Although formally and etymologically synchronically analysable as dīpa (“island”) + -in, this may not have affected the sense.
dīpin m
| Case \ Number | Singular | Plural |
|---|---|---|
| Nominative (first) | dīpī or dīpi | dīpino or dīpī or dīpiyo |
| Accusative (second) | dīpiṃ or dīpinaṃ | dīpino or dīpī |
| Instrumental (third) | dīpinā | dīpīhi or dīpībhi |
| Dative (fourth) | dīpissa or dīpino | dīpīnaṃ |
| Ablative (fifth) | dīpismā or dīpimhā | dīpīhi or dīpībhi |
| Genitive (sixth) | dīpissa or dīpino | dīpīnaṃ |
| Locative (seventh) | dīpismiṃ or dīpimhi | dīpīsu |
| Vocative (calling) | dīpi | dīpino or dīpī |