STROBE is a playable word

strobe Scrabble® Dictionary

verb
strobed, strobing, strobes
to produce brief, high-intensity flashes of light
80 Playable Words can be made from "STROBE"
   2-Letter Words (12 found)
   3-Letter Words (27 found)
   5-Letter Words (11 found)
   6-Letter Words (2 found)