Is “Capsize” a Scrabble word?
Yes
CAPSIZE
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 Capsize
/kæpˈsaɪz/
verb
1.To overturn.
2.To cause (a ship) to overturn.
3.(of knots) To deform under stress.
Synonyms: keel over, turn turtle