In Danish the adjectives decline according to the gender and number of the nouns and to the definiteness of the nouns. Regular adjectives either have no ending, end on -t or end on -e: No ending for nouns with the article en, -t ending for et nouns and -e ending for plural and for known form of noun plus adjective. See The adjectives- a description
| 1. | A general rule for Danish spelling says that ending after syllable with short vowel causes doubling of the consonant: en grøn Tuborg, to grønne Tuborg. |
| 2. | Adjectives ending on -e do not take endings: Et lille(-) hus, to levende(-) øjne. |
| 3. | Adjectives ending on a stressed vowel take -t, but not -e: Et blåt øje, de blå(-) øjne. |
| 4. | Adjectives ending on -en, -el, -er loose a syllable before -e ending: en gammel so/den gam(-)le so; lækker kage/de læk(-)re kager. |
| 5. | Adjectives ending on -et do not take -t, the -e ending is written -ede: Et stribet(-) tørklæde/de stribede tørklæder |
| 6. | Adjectives ending on -t already do not take -t: en kort tid, et kort(-) liv, but to korte tog. |
| 7. | Adjectives ending on -sk do not take -t : et historisk øjeblik. |