Is “Unhappiest” a Scrabble word?
Yes
UNHAPPIEST
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 Unhappiest
adjective
1.Not happy; sad.
2.Not satisfied; unsatisfied.
“An unhappy customer is unlikely to return to your shop.”
3.Not lucky; unlucky.
“The doomed lovers must have been born under an unhappy star.”