Declensional

de·clen·sion  (d-klnshn)

n.

1. Linguistics

a. In certain languages, the inflection of nouns, pronouns, and adjectives in categories such as case, number, and gender.

b. A class of words of one language with the same or a similar system of inflections, such as the first declension in Latin.

2. A descending slope; a descent.

3. A decline or decrease; deterioration: "States and empires have their periods of declension" Laurence Sterne.

4. A deviation, as from a standard or practice.

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[Middle English declenson, from Old French declinaison, from Latin dclnti, dclntin-, grammatical declension, declination; see declination.]

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de·clension·al adj.