PINGO is a playable word

pingo Scrabble® Dictionary

noun
pl. pingos or pingoes
a low mound of earth formed by expansion of underlying frost
22 Playable Words can be made from "PINGO"
   2-Letter Words (9 found)
   3-Letter Words (7 found)
   4-Letter Words (3 found)
   5-Letter Words (3 found)