UPRIVERS is a playable word

upriver Scrabble® Dictionary

noun
pl. uprivers
an area lying toward the source of a river
113 Playable Words can be made from "UPRIVERS"
   2-Letter Words (9 found)
   3-Letter Words (30 found)
   6-Letter Words (6 found)
   7-Letter Words (3 found)
   8-Letter Words (1 found)