Fly"a*way` (?), a. Disposed to fly away; flighty; unrestrained; light and free; -- used of both persons and things. -- n. A flyaway person or thing. "Truth is such a flyaway." Emerson.

flyaway adj. 1. frivolous; -- of people. serious
Syn. -- flighty.
[WordNet 1.5]

2. Tending to move away from a center, rather than remain in a compact group; -- used of hair or clothing or of small particles of matter. Light objects or particles readily taking a static electric charge may be moved apart by acquisition of a charge, or by approach of a charged object. Such a property is called flyaway.
Syn. -- fluttering.
[WordNet 1.5]

Fly"a*way` (?), a. Disposed to fly away; flighty; unrestrained; light and free; -- used of both persons and things. -- n. A flyaway person or thing. "Truth is such a flyaway." Emerson.