AureliaeLacrimae Posted December 7, 2014 Report Share Posted December 7, 2014 3rd declension is a varied one, so I'm going to leave it for the time being. That's why I immediately skipped forward to 4th or u-declension and later on to 5th or e-declension.4th or u-DeclensionNominative singular always ends on either -us (masculine nouns) or -u (neuter), and the base always ends on -u. There are only seven of feminine nouns in this declension and they follow masculine endings. The only difference is the form of adjective - they take feminine adjective. Sg PlN fructus genu fructus genuaG fructus genus fructuum genuumD fructui genui fructibus genibusAcc fructum genu fructus genuaV fructus genu fructus genuaAb fructu genu fructibus genibusRemember the rule of the neuter? It's followed here as well!Reminder:All neuter nouns have the same form for Nominative, Accusative, and Vocative. Also, in plural, these three end in -a!There are several exceptions to D and Ab plural form. I'll name them here. The reason: to differ from the nouns which belong to 3rd declension and have the same -ibus ending, but about that more later: Dative/Ablative plural formacus, acus, f - needle - acubus (instead of acibus)arcus, arcus, m - arch - arcubus (instead of arcibus)lacus, lacus, m - lake - lacubus (instead of lacibus)quercus, quercus, f - oak - quercubus (instead of quercibus)specus, specus, m - cave - specubus (instead of specibus)artus, artus, m - extremity - artubus (instead of artibus)partus, partus, m - birth - partubus (instead of partibus)Feminine nouns:Idus, us, f - 15th day of the month Idus Martiae - 15th of Marchporticus, us, f - porch porticus alta - high porchacus, us, f - needle acus acuta - sharp needlemanus, us, f - hand manus valida - strong handdomus, us, f - home domus antiqua - old housequercus, us, f - oak quercus umbrosa - shadowy oakdomus, us, f is the only noun which follows an exception!! This is how you decline domus: Singular PluralN domus domusG domus domuum/domorum!!!D domui domibusAcc domum domos!!!V domus domusAb domo!! domibusWherever you see exclamation marks, that's where you have to note the change. Domus is a noun which had taken half of the second declension. Ablative sg, Accusative Plural and optional G plural are from the second declension. The rest follows the pattern of fourth. Quote Link to comment Share on other sites More sharing options...
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