lexili seleti: cactus
By - Gootube2000
Why not just kaktus?
Stop consonant clusters (such as -kt-, -pt-, -dg-, -bd-, etc) are not allowed in root words except in culture-specific words like "vodka" and "futbol" or proper nouns like "Edgar" or "MakDonald" (though we generally don't respell people's names)
The specific rules for rules such as this are detailed towards the bottom of this page: http://xwexi.globasa.net/eng/grammar/alphabet-and-pronunciation