Word derivation for "flat" (having no variations in height):
Basque = lau, Finnish = litteä
Miresua = lati
I found the word flat twice in Alice's Adventures in Wonderland.
First came ten soldiers carrying clubs; these were all shaped like the three gardeners, oblong and flat, with their hands and feet at the corners...This Miresua conlang word has been changed. The word for flat is now latä.