Is “Sesquipedalian” a Scrabble word?
Yes
SESQUIPEDALIAN
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 Sesquipedalian
/ˌsɛskwɪpɪˈdeɪlɪən/
noun
1.A long word.
2.A person who uses long words.
adjective
1.(of a word or words) Long; polysyllabic.
2.Pertaining to or given to the use of overly long words.
“Our dinner guest was so sesquipedalian that no one could understand what he said.”
Synonyms: polysyllabic