a. The Superlative is lacking also in many adjectives in -ālis, -īlis,
-Ä­lis, -bilis, and in a few others.

Comparison by _Magis_ and _Maximē_.

74. Many adjectives do not admit terminational comparison, but form the
Comparative and Superlative degrees by prefixing magis (_more_) and maximē
(_most_). Here belong--

1. Many adjectives ending in -ālis, -āris, -idus, -īlis, -icus, imus, īnus,
-ōrus.

2. Adjectives in -us, preceded by a vowel; as, idōneus, _adapted_; arduus,
_steep_; necessārius, _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_;
mortālis, _mortal_.

2. Some special words; as, mīrus, gnārus, merus; and a few others.

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