Introduction

A positive adjective is a 'normal' one such as 'hot' or 'angry'. These can be formed in Latin through 1st & 2nd or 3rd declension endings.

A comparative adjective is one such as 'hotter' or 'more angry'. These are formed using the ending -ior and declined like 3rd declension adjectives, as in the table below.

Singular Plural
m & f n m & f n
Nominative iratior iratius iratiores iratiora
Accusative iratiorem iratius iratiores iratiora
Genitive iratioris iratioris iratiorum iratiorum
Dative iratiori iratiori iratioribus iratioribus
Ablative iratiore iratiore iratioribus iratioribus

A superlative adjective is one such as 'hottest' or 'most angry'. These are formed using the basic ending -issimus and are declined like 1st and 2nd declension adjectives, as in the table below.

Singular Plural
m f n m f n
Nominative iratissimus iratissima iratissimum iratissimi iratissmae iratissima
Accusative iratissimum iratissimam iratissimum iratissimos iratissimas iratissima
Genitive iratissimi iratissimae iratissimi iratissimorum iratissimarum iratissimorum
Dative iratissimo iratissimae iratissimo iratissimis iratissimis iratissimis
Ablative iratissimo iratissimā iratissimo iratissimis iratissimis iratissimis

There are a few common irregular cases that need to be learnt.

Positive Translation Comparative Superlative
bonus good melior optimus
magnus big maior maximus
malus bad peior pessimus
multus much plus plurimus
parvus small mino minimus