There are five noun delensions in the Latin language.
First/second declension. It can be Latinus, Latina, or Latinum.This is because "Latinus" is an adjective, the name of the language is "lingua Latina."
"Multi."
That depends on how it is being used. Multus (masculine), Multa (feminine), Multum (neuter) are the three genders in the nominative. You have to match the adj (multus) to the noun it is modifying....
None. It is irregular. Nom = ego Genitive = Mei Dative = Mihi Accusative = Me Ablative = Me
How to Use E.g and I.e
How to Use an Apostrophe
How to Use Capital Letters
WSJ's Mary Anastasia O'Grady on the Needs of Latin America