Is “Lambast” a Scrabble word?
Yes
LAMBAST
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 Lambast
verb
1.To scold, reprimand or criticize harshly.
“Her first novel was well and truly lambasted by the critics.”
2.(dated in UK English but not US English) To give a thrashing to; to beat severely.
Synonyms: beat, hit, thrash, berate, scold, tell off