Is “Sup” a Scrabble word?
Yes
SUP
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 Sup
/sʌp/
noun
1.A sip; a small amount of food or drink.
verb
1.To sip; to take a small amount of food or drink into the mouth, especially with a spoon.