= fantastic, adj. 4.

Resembling feathers or plumes. in lightness. Hence of immaterial things: Light, fickle. Of material things: Light, flimsy.

= fantastic, adj. 5. Obs.

Derived from mere opinion or preference; not based on the nature of things; hence, capricious, uncertain, varying.

Calling forth or resulting from the exercise of fancy or caprice. Of an action: Capricious, whimsical.

? possessed with a whim or odd fancy.

Arbitrarily devised. Now rare. Cf. fancy, adj.

Readily changing from one interest or mood to another; changeable, fickle; marked or characterized by… Of the mind, disposition, etc.

Marked or characterized by, full of, subject to, vagaries; erratic.