#1 declension n. the inflection of nouns and pronouns and adjectives in Indo-European languages. wn
#2 declension n. [deterioration, decline in quality, worsening] process of changing to an inferior state. wn
#3 declension n. [descent, declivity, fall, decline, declination, downslope] a downward slope or bend. wn
#4 declension n. a class of nouns or pronouns or adjectives in Indo-European languages having the same (or very similar) inflectional forms; "the first declension in Latin". wn
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