Adjectives in Denkurian agree with their nouns in gender, number and case. Adjectives decline as nouns do Adjectives are cited by their neuter singular nominative form.
Adjective inflection (positive form)
| Class | neuter | masculine | feminine | adverb |
| i-class | -i | -u | -a | -izepi/-o/-au* |
| e-class | -e | -e | -e | -ezepi |
| o-class | -o | -o | -o | -ozepi |
*-o is used with the comparative and superlative suffixes. A few irregular adjectives use -o or -au
Example declension
raiki strong
| neuter | masculine | feminine | ||
| Singular | nom. sg. | raiki | raiku | raika |
| acc. sg. | raikis | raikus | raikas | |
| dat. sg. | raikim | raikuv | raikam | |
| gen. sg. | raikiv | raikuk | raikav | |
| instr. sg. | raikid | raikud | raikad | |
| Plural | nom. pl. | raikai | raikoi | raike |
| acc. pl. | raikais | raikois | raikes | |
| dat. pl. | raikaim | raikoim | raikem | |
| gen. pl. | raikaiv | raikoiv | raikev | |
| instr. pl. | raikaid | raikoid | raiked |
Degrees of Comparison
| Clase | Comparative adj. | Comparative adv. | Superlative adj. | Superlative adv. |
| e-class | -engi | -engo | -impi | -impo |
Negative, contrastive, and sublative forms are simply the positive, comparative, and superlative forms prefixed by ven-, respectively.
Irregular adjectives and adverbs
robi, rongi, rimpi, robo/robau good, better, best, well
brun, brungo, broimpo gladly/willingly, rather/preferably, most preferably
gerri, grengi, grimpi, grengo little/few, less/fewer, least/fewest, less (adv.)