Given to or characterized by reverie or fantasy; (in early use) †deluded, mistaken, foolish (obsolete); (later chiefly) impractical; (now also in…

Filled with (strange, new) fancies or imaginations (so Old French fantasié).

Of persons or minds: Inclined to be fanciful, vague, or frothy, in ideas or discourse.

Of a person: given to using the imagination; specially characterized by imagination.†(a) Full of thoughts, plans, designs, or devices. Obsolete…

Whimsical.

depreciative. Like air in its (apparently) intangible or empty character. Speculative, conjectural; notional; impractical.

? possessed with a whim or odd fancy.

Prone to entertain chimeras; filled with idle fancies and wild dreams; whimsical, fanciful.

Addicted to the framing of figments.

Given to abstract or fanciful speculation; holding merely speculative views. Obsolete.

Given to fanciful and unpractical views; having little regard to what is actual or possible; speculative, dreamy.

Of a person: inclined to adopt speculative or unsubstantiated views; having a tendency to be impractical, polemical, or opinionated.

Of or relating to J. M. Barrie; characteristic or suggestive of, or resembling, his works, esp. Peter Pan, the boy who wouldn't grow up (see Peter Pan…