O.E. stearc "stiff, strong" (related to starian "to stare"), from P.Gmc. *starkaz (cf. O.N. sterkr, O.Fris. sterk, M.Du. starc, O.H.G. starah, Ger. stark, Goth. *starks), from PIE base *ster- "stiff, rigid" (see
stare). Meaning "utter, sheer, complete" first recorded c.1400,