Old English sear "dried up, withered," from Proto-Germanic *sauzas (cf. Middle Low German sor, Dutch zoor), from PIE root *saus- (cf. Sanskrit susyati "dries, withers;" Old Persian uška- "dry" (adj.), "land" (n.); Avestan huška- "dry;" Latin sudus "dry"). A good word now relegated to bad poetry. Related to sear. Sere month was an old name for "August."