Declension is the addition to the stems of Nouns suffixes which indicate grammatical category , such as: case , number & gender . Formally, declension is the variation in the endings of nouns, pronouns, & adjectives, by which grammatical case, number, and gender are identified. This subject is dealt with in many grammar guides and summary tables, so I'll be brief. Noun Stems The stem of a noun is the base form before any suffix has been added and are usually the forms listed in dictionaries. Noun stems in Pāli are regularly grouped into two divisions, those that end in: Vowels, comprising all the stems that end: -a, -ā, -i, -ī, -u, -ū, (o) Consonants, which include stems ending: -ar, -ī/in, -an, -at/ant, -as & -us
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