Meaning

adjective being or located on or directed toward the side of the body to the east when facing north

adjective free from error; especially conforming to fact or truth

adjective socially right or correct

originEtymology tree English right Proto-Indo-European *-yōs Proto-Indo-European *-tHós Proto-Indo-European *-istHos Proto-Germanic *-istaz Proto-West Germanic *-ist Old English -est Middle English -est English -est English rightest From right + -est.

Etymology from Wiktionary, CC BY-SA 3.0