pi means of. You only use it when the adjective(s) is/are mutiple words long. Examples: ni kiwen li loje (this rock is red) ni kiwen pi loje pimja ni kiwen li loje pimja ni kiwen li loje li pimja (this rock is a redish yellow) Words list: https://raw.githubusercontent.com/baisong/tokitoki-js/gh-pages/nimi_ale.png
