Skittish, a.
Etymology: [See Skit, v. t.]
1. Easily frightened; timorous; shy; untrustworthy; as, a skittish colt. "A restiff, skittish jade." L'Estrange.
2. Wanton; restive; freakish; volatile; changeable; fickle. "Skittish Fortune's hall." Shak. -- Skit"tish*ly, adv. -- Skit"tish*ness, n.
Shades of meaning
Fernald has no entry of its own for skittish; he lists it under restive.
He lists it without comment; the entries above explain its neighbors.