COSYtools / Noun Declensions

Noun Declensions & Plural Paradigms

Comprehensive declension patterns and ending tables across major language families.

🇷🇺 Russian Noun Declension Classes (3 Declensions)

Declension ClassGender & Ending CriteriaSample NounsNom. Plural
1st DeclensionFeminine & Masculine in -а / -якарта, земля, папа-ы / -и
2nd DeclensionMasculine (cons / -й) & Neuter (-о / -е)стол, музей, окно, море-ы / -и / -а / -я
3rd DeclensionFeminine ending in soft sign -ьночь, площадь, дверь-и

🇬🇷 Greek Noun Inflection Types

GenderSingular Nom. EndingGenitive SingularAccusative Plural
Masculine-ος / -ας / -ης-ου / -α / -η-ους / -ες / -ες
Feminine-α / -η / -ος-ας / -ης / -ου-ες / -ες / -ους
Neuter-ο / -ι / -μα-ου / -ιου / -ματος-α / -ια / -ματα

🇫🇷 🇮🇹 Romance Irregular Plural Shifts

• French -al -> -aux: un journal -> des journaux, un animal -> des animaux.

• French -eau -> -eaux: un château -> des châteaux, un eau -> des eaux.

• Italian -co / -go -> -chi / -ghi: il cuoco -> i cuochi, l'albergo -> gli alberghi.