Language/Volapuk/Grammar/Adjectives

Adjectives are invariable when they follow their noun, unless separated from it by another word which is not an adjective; however, if they precede their noun, then they must agree with that noun:

• Buk smalik nitedik ‘a small interesting book’
• Labob buki smalik nitedik ‘I have a small interesting book’
• Labob bukis smalik e nitedikis ‘I have small and interesting books’
• Labob smalikis nitedikis bukis ‘I have small interesting books’

Source: http://www.xn--volapk-7ya.com/quick-look-at-volapuk.html