13 letters · 32 points in Scrabble
verb make calm or still
verb cause to be calm or quiet as by administering a sedative to
adjective tending to soothe or tranquilize
originEtymology tree English tranquilize Proto-Indo-European *-onts Proto-Germanic *-ndz Proto-West Germanic *-andī Old English -ende Middle English -ynge English -ing English tranquilizing From tranquilize + -ing.
Etymology from Wiktionary, CC BY-SA 3.0