Latin Noun Declension
| Declension | gen. sg. | Characteristics | ||
|---|---|---|---|---|
| First | -ae | thematic, feminine nouns, some adjectives | ||
| Second | -i | thematic, o/e vocalic alternance, masculine and neuter nouns, some adjectives | ||
| Third | -is | athematic, all genders, some adjectives; stems ending in a consonant and others in -i | ||
| Fourth | -us | thematic, all genders | ||
| Fifth | -ei | athematic, small number of feminine nouns |