9 letters · 9 points in Scrabble
noun someone who takes the place of another person
verb go back and forth; swing back and forth between two states or conditions
verb exchange people temporarily to fulfill certain jobs and functions
originBorrowed from Latin alternātus, the perfect passive participle of Latin alternō (“to take turns”) (see -ate (1,2 and 3)), from alternus (“one after another, by turns”), from alter (“other”) + -nus. Doublet of altern; see also alter.
Etymology from Wiktionary, CC BY-SA 3.0