General rules
The way to form the various inflections is to take the crude form (singular or plural, according to the cases) and then add the particular case ending. In other words, the singular case or inflection is to be formed by adding the singular case ending to the singular flex stem, and the plural case ending to the plural flex stem. However, the plural flex stem is always nasal and in the case of the plural inflections, sometimes there is a little change to be made to the way the nasal sound of the plural flex stem is represented. There are only two letters that can represent a nasal sound, besides of course the tilde, i.e., “~“. These are m and n. So sometimes the nasal sound of the plural flex stem has to be represented by the letter n instead, in order to conform to our spelling rules. This is required for the genitive plural, dative plural, locative plural on, and ablative plural, whereas the spelling of the plural flex stem stays unchanged in the formation of the vocative plural, instrumental plural, and locative plural in.
We can now proceed to the formation of the various inflections.
The Genitive
All genitives, singular as well as plural, are nothing but adjectives, and the regular ones at that. That is why, while we have just two case endings for for every other inflection, i.e., one ending for the singular and one for the plural, in the case of the genitive, we have two case endings for each of the three genders, i.e., three for the singular and three for the plural. The case endings for the genitive singular are cho, chi and chem
Examples: The flex stems for madd (coconut tree)
The Dative
Unlike the genitive case, which has been treated above, the dative is pretty simple. Just add a k to the flex stem, whether it is a singular or plural. However, as mentioned above, in the case of the plural, the plural flex stem will have to undergo that slight transformation: the m changes into n. For example it you want to say, “I’m watering the coconut tree”, you would say “Hanv maddak udok ghaltam”
The Instrumental
I have written a great deal about the instrumental case. The instrumental singular is formed by adding n to the flex stem (Compare that with the locative in below — the two are not the same in form). The instrumental plural is formed by adding nim to the plural flex stem (Again compare that to the locative in — in this case they are, in fact, identical in form). Examples: “Kombyên tantim ghalem”
The Ablative
The ablative, like the dative, has the same case ending for the singular as well as the plural. However, the flex stems will be different. The common case ending for the ablatives is chean.
The Locatives on and in
The locative on can have two endings, r and chêr.
The locative in is more straightforward. The singular case ending is nt and the plural nim. Example: How would you put to following sentence in Konkani: “There is a stone in the pocket”? The Konkani word for pocket is bolos,
The Vocative
The vocative case is use when calling out to someone or something. It can be singular or plural, depending upon the number of people or things being called out to. In English, the vocative is denoted by placing an “O” before the noun. E.g., “O man”, or “Praise the Lord, O my soul”. In Konkani the vocative singular is just the flex stem, while the vocative plural is formed by adding nô to the plural flex stem. You must have heard the Konkani dulpod, “Chêddva gô, chedduva“.