Plu. in -um instead of -ium; as, venientum, _of those coming_.

* * * * *

COMPARISON OF ADJECTIVES.

71. 1. There are three degrees of Comparison,--the Positive, the
Comparative, and the Superlative.

2. The Comparative is regularly formed by adding -ior (Neut. -ius), and the
Superlative by adding -issimus (-a, -um), to the Stem of the Positive
deprived of its final vowel; as,--

altus, _high_, altior, _higher_, altissimus, _highest_,
_very high_.
fortis, _brave_, fortior, fortissimus.
fēlīx, _fortunate_, fēlīcior, fēlīcissimus.

So also Participles, when used as Adjectives; as,--

doctus, _learned_, doctior, doctissimus.
egēns, _needy_, egentior, egentissimus.

3. Adjectives in -er form the Superlative by appending -rimus to the
Nominative of the Positive. The Comparative is regular. Thus:--

asper, _rough_, asperior, asperrimus.
pulcher, _beautiful_, pulchrior, pulcherrimus.
ācer, _sharp_, ācrior, ācerrimus.
celer, _swift_, celerior, celerrimus.