QUIPUS is a playable word

quipu Scrabble® Dictionary

noun
pl. quipus
an ancient calculating device
19 Playable Words can be made from "QUIPUS"
   2-Letter Words (6 found)
   3-Letter Words (9 found)
   4-Letter Words (1 found)
   5-Letter Words (2 found)
   6-Letter Words (1 found)