ROOFTOP is a playable word

rooftop Scrabble® Dictionary

noun
pl. rooftops
a roof
37 Playable Words can be made from "ROOFTOP"
   2-Letter Words (5 found)
   3-Letter Words (17 found)
   4-Letter Words (12 found)
   5-Letter Words (2 found)
   7-Letter Words (1 found)