4 th & 5 th Declension
What is a Declension? Latin nouns are divided into groups called declensions. There are 5 declensions. You determine the declension of a noun based on the ending of the second form in the vocab entry. The declension of a noun determines which endings can go on it.
Telling declensions apart Always look at the second form of a noun –1 st Declension ends with: ae –2 nd Declension ends with: ī –3 rd Declension ends with: is –4 th Declension ends with: ūs –5 th Declension ends with: ēī
4 th Declension The vocabulary entry for a noun gives the Nominative singular and the Genitive singular forms of a noun. By looking at the genitive form in the vocabulary entry, you can determine the declension for the noun. 4 th Declension genitive singular = ūs
How to Decline To decline a noun, find the noun stem by dropping the Genitive ending from the 2 nd form (in the vocabulary entry) and add the other endings for that declension. 4 th Declension Endings SingularPlural Nominativeusūs Genitiveūsuum Dativeuīibus Accusativeumūs Ablativeūibus
For Example portus, portūs SingularPlural Nominativeportusportūs Genitiveportūsportuum Dativeportūīportibus Accusativeportumportūs Ablativeportūportibus
For Example manus, manūs SingularPlural Nominativemanusmanūs Genitivemanūsmanuum Dativemanūīmanibus Accusativemanummanūs Ablativemanūmanibus
How to Decline To decline a noun, find the noun stem by dropping the Genitive ending from the 2 nd form (in the vocabulary entry) and add the other endings for that declension. 4 th Declension Neuter Endings SingularPlural Nominativeuūa Genitiveūsuum Dativeūibus Accusativeūūa Ablativeūibus
For Example cornū, cornūs SingularPlural Nominativecornūcornūa Genitivecornūscornuum Dativecornūcornibus Accusativecornūcornūa Ablativecornūcornibus
For Example genū, genūs SingularPlural Nominativegenūgenūa Genitivegenūsgenuum Dativegenūgenibus Accusativegenūgenūa Ablativegenūgenibus
How to Decline To decline a noun, find the noun stem by dropping the Genitive ending from the 2 nd form (in the vocabulary entry) and add the other endings for that declension. 5 th Declension Endings SingularPlural Nominativeēs Genitiveēīērum Dativeēīēbus Accusativeēmēs Ablativeēēbus
For Example rēs, rēī SingularPlural Nominativerēs Genitiverēīrērum Dativerēīrēbus Accusativeremrēs Ablativerērēbus
For Example diēs, diēī SingularPlural Nominativediēs Genitivediēīdiērum Dativediēīdiēbus Accusativediemdiēs Ablativediēdiēbus
For Example effigiēs, effigiēī SingularPlural Nominativeeffigiēs Genitiveeffigiēīeffigiērum Dativeeffigiēīeffigiēbus Accusativeeffigiemeffigiēs Ablativeeffigiēeffigiēbus