SHACKOS is a playable word

shacko Scrabble® Dictionary

noun
pl. shackos or shackoes
shako
75 Playable Words can be made from "SHACKOS"
   2-Letter Words (10 found)
   3-Letter Words (23 found)
   5-Letter Words (13 found)
   6-Letter Words (4 found)
   7-Letter Words (2 found)