11 letters · 17 points in Scrabble
noun a sensation that normally occurs in one sense modality occurs when another modality is stimulated
originEtymology tree Proto-Indo-European *sem-der.? Proto-Hellenic *ksún Ancient Greek σύν (sún) Ancient Greek σῠν- (sŭn-)der. English syn- English -esthesia English synesthesia From syn- + -esthesia.
Etymology from Wiktionary, CC BY-SA 3.0