Is “Whereat” a Scrabble word?
Yes
WHEREAT
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 Whereat
/wɛəɹˈæt/
conjunction
1.At which, or toward which
2.Because of which; whereupon