Definition of 'declension'

Noun

1. the inflection of nouns and pronouns and adjectives in Indo-European languages
2. process of changing to an inferior state
      Synonyms: deterioration decline in quality worsening
3. a downward slope or bend
      Synonyms: descent declivity fall decline declination downslope
      Antonyms: ascent acclivity rise raise climb upgrade
4. 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"

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