SIGNPOSTED is a playable word

signpost Scrabble® Dictionary

verb
signposted, signposting, signposts
to provide with signposts (posts bearing signs)
640 Playable Words can be made from "SIGNPOSTED"
   2-Letter Words (28 found)
   3-Letter Words (95 found)
   9-Letter Words (1 found)
   10-Letter Words (1 found)