Is “Hater” a Scrabble word?
Yes
HATER
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 Hater
/ˈheɪtə(ɹ)/
noun
1.One who hates.
2.One who expresses unfounded or inappropriate hatred or dislike, particularly if motivated by envy.
Synonyms: despiser