7 letters · 13 points in Scrabble
noun an innocuous or inert medication; given as a pacifier or to the control group in experiments on the efficacy of a drug
noun (Roman Catholic Church) vespers of the office for the dead
originInherited from Middle English placebo, borrowed from Latin placēbō (“I will please”), the first-person singular future active indicative of placeō (“to please”).
Etymology from Wiktionary, CC BY-SA 3.0