Word Origin & History
sheerc.1200, "exempt, free from guilt," later schiere "thin, sparse" (c.1400), from O.E. scir "bright, clear," influenced by O.N. cognate scær "bright, clean, pure," from P.Gmc. *skairijaz (cf. O.S. skiri, O.Fris. skire, Ger. schier, Goth. skeirs "clean, pure"), perhaps from PIE base *skai- "to shine"
(see
shine). Sense of "absolute, utter" (sheer nonsense) developed 1580s; that of "very steep" (sheer cliff) is first recorded 1800.