Is “Insane” a Scrabble word?
Yes
INSANE
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 Insane
/ɪnˈseɪn/
adjective
1.Exhibiting unsoundness or disorder of mind; not sane; mad
2.Used by, or appropriated to, insane persons
“an insane asylum”
3.Causing insanity or madness.
Synonyms: delirious, distracted