shy (adj.) Look up shy at Dictionary.com
late O.E. sceoh "shy," from P.Gmc. *skeukh(w)az "afraid" (cf. M.L.G. schüwe, Du. schuw, Ger. scheu "shy;" O.H.G. sciuhen, Ger. scheuchen "to scare away"). Uncertain cognates outside Gmc., unless in O.C.S. scuti "to hunt, incite." It. schivare "to avoid" is a Gmc. loan-word. The verb meaning "to recoil" first recorded 1650.
shy (v.) Look up shy at Dictionary.com
"to throw with a jerk or toss," 1787, colloquial, of unknown origin and uncertain connection to shy (adj.).