postero die, anno, posterior, later, postremus, latest, etc. the following last_. day_, etc., postumus, late-born, posteri, posthumous. descendants, exteri, exterior, outer extremus, extimus, foreigners, outermost. nationes exterae, foreign nations, inferi, gods of the inferior, lower_, infimus, imus, lower world_, lowest.  Mare Inferum, Mediterranean Sea, superi, gods superior, higher_, supremus, last. above_, summus, highest.  Mare Superum, Adriatic Sea,

3.  Comparative lacking.

vetus, old, ——­[17] veterrimus. fidus, faithful, ——­ fidissimus. novus, new, ——­[18] novissimus,[19] last. sacer, sacred, ——­ sacerrimus. falsus, false, ——­ falsissimus.

Also in some other words less frequently used.

4.  Superlative lacking.

alacer, lively, alacrior, ——­ ingens, great, ingentior, ——­ salutaris, wholesome, salutarior, ——­ juvenis, young, junior, ——­[20] senex, old, senior. ——­[21]

  a.  The Superlative is lacking also in many adjectives in -alis, -ilis,
  -ilis, -bilis, and in a few others.

Comparison by Magis and Maxime.

74.  Many adjectives do not admit terminational comparison, but form the Comparative and Superlative degrees by prefixing magis (more) and maxime (most).  Here belong—­

1.  Many adjectives ending in -alis, -aris, -idus, -ilis, -icus, imus, inus, -orus.

2.  Adjectives in -us, preceded by a vowel; as, idoneus, adapted; arduus, steep; necessarius, necessary.

  a.  Adjectives in -quus, of course, do not come under this rule.  The first
  u in such cases is not a vowel, but a consonant.

Adjectives not admitting Comparison.

75.  Here belong—­

1.  Many adjectives, which, from the nature of their signification, do not admit of comparison; as, hodiernus, of to-day; annuus, annual; mortalis, mortal.

2.  Some special words; as, mirus, gnarus, merus; and a few others.

* * * * *

FORMATION AND COMPARISON OF ADVERBS.

76.  Adverbs are for the most part derived from adjectives, and depend upon them for their comparison.