Adjectives Grammar Index Page

The Comparative Degree

The comparative degree in English is translated as "bigger" or "more fun." In Latin it is represented by 3rd declension endings -ior and -ius. To form the comparative, add -ior to the stem of the adjective. However, if the adjective modifies a neuter nominative or accusative singular noun, add -ius instead of -ior. Decline the resulting comparative adjective in the 3rd declension. Examples:

Declension Positive degree adjective Comparative forms Declension
1st - 2nd iratus, irata, iratum
angry
iratior, iratius
angrier, rather angry
3rd
1st - 2nd laetus, laeta, laetum
happy
laetior, laetius
happier, rather happy
3rd
3rd prudens, prudentis
sensible
prudentior, prudentius
more sensible, rather sensible
3rd
3rd pinguis, pinguis, pingue
fat
pinguior, pinguius
fatter, rather fat
3rd
3rd nobilis, nobilis, nobile
noble
nobilior, nobilius
nobler, more noble, rather noble
3rd
3rd facilis, facilis, facile
easy
facilior, facilius
easier, rather easy
3rd
1st - 2nd pulcher, pulchra, pulchrum
beautiful
pulchrior, pulchrius
more beautiful, rather beautiful
3rd
3rd acer, acris, acre
keen
acrior, acrius
keener, rather keen
3rd

Notice that pulcher and acer drop out -e- and their comparatives are built on the stems acr- and pulchr-. Notice too that, regardless of the declension of its positive form, a comparative adjective is always declined in the third declension. Study the declined noun-adjective pairs below:

Positive Degree novus vir nova femina novum tempus
singular nominative novior vir novior femina novius tempus
genitive novioris viri novioris feminae novioris temporis
dative noviori viro noviori feminae noviori tempori
accusative noviorem virum noviorem feminam novius tempus
ablative noviore viro noviore feminâ noviore tempori
plural nominative noviores viri noviores feminae noviora tempora
genitive noviorum viriorum noviorum feminarum noviorum temporum
dative novioribus virîs novioribus feminîs novioribus temporibus
accusative noviores viros noviores feminas noviora tempora
ablative novioribus virîs novioribus feminîs novioribus temporibus

Finally, you have probably learned to make comparisons using the ablative case. As an alternative, you can use quam with the nominative case:

A rabbit is faster than a tortoise   =   Lepus est celerior testudine   =   Lepus est celerior quam testudo

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