Is “Biggest” a Scrabble word?
Yes
BIGGEST
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 Biggest
/ˈbɪɡəst/
adjective
1.Of great size, large.
“Elephants are big animals, and they eat a lot.”
2.(of an industry or other field, often capitalized) Thought to have undue influence.
“Big Tech”
3.Popular.
“That style is very big right now in Europe, especially among teenagers.”
Synonyms: adult, fully grown, grown up, all the rage, in demand, well liked