UPTIME is a playable word

uptime Scrabble® Dictionary

noun
pl. uptimes
the time during which machinery is functioning
41 Playable Words can be made from "UPTIME"
   2-Letter Words (13 found)
   3-Letter Words (16 found)
   4-Letter Words (9 found)
   5-Letter Words (1 found)
   6-Letter Words (2 found)