Is “Sough” a Scrabble word?
Yes
SOUGH
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Sough
/saʊ/
noun
1.A murmuring sound; rushing, rustling, or whistling sound.
2.A gentle breeze; a waft; a breath.
3.A (deep) sigh.
verb
1.To make a soft rustling or murmuring sound.