1. the inflection of nouns, pronouns, and adjectives to show grammatical relationships such as case, number, and gender
Usage: grammar
2. a gradual decline or deterioration
Usage: formal

Examples

• Latin has five declensions for nouns.
• Students must memorize the declension patterns to translate correctly.
• The first declension includes mostly feminine nouns ending in -a.
• German declension can be challenging for English speakers.
• The declension of the empire took centuries.
• We witnessed the gradual declension of the neighborhood.
• The declension of moral standards concerned the community leaders.