THALWEG is a playable word

thalweg Scrabble® Dictionary

noun
pl. thalwegs
the line defining the lowest points along the length of a riverbed
94 Playable Words can be made from "THALWEG"
   2-Letter Words (16 found)
   5-Letter Words (5 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)