Chimerical

[Sarah]

Merely imaginary; fanciful; fantastic; wildly or vainlyconceived; having, or capable of having, no existence except inthought; as, chimerical projects.

[Sarah]

Amazing or fantastic, special, very cool, or unexpected.

[Little_Girl]

relating to a hope or dream that is extremely unlikely ever to come true:

[Tracie Lynn]

Pertaining to the [process] by which a line is [drawn]. [Contingent] to the technology available to a culture or era.