Adjectives change form according to the gender and number of the nouns they qualify, and to their logical function. Most Friulian adjectives have four endings, whether masculine or feminine, and singular or plural: l'om furlan; i oms furlans; la femine furlane; lis feminis furlanis.

Adjectives may also be modified by suffixes. Two of the most common are -on and -onon, meaning very, a lot; they are used in alternative to the form une vore + adjective.

Two other suffixes, -ut and -in, are used as diminutives, or to imply affection or sympathy. A third suffix, -at, is used as a pejorative.

These suffixes may be used with nouns as well as with adjectives.

Comparatives are formed by preceding the adjectives by the adverbs plui (more) and mancul (less). plui alt (higher) mancul alt (less high).

The second term of the comparison is introduced by di/che no

The form as ... as is expressed in a variety of ways: