utopian

As an adjective utopian

is ideal but often impractical; visionary.

As a noun utopian

is someone who supports or heralds the establishment of a utopia.

As an adverb utopianly is

in a utopian way.

As adjectives the difference between utopian and banksian

is that utopian is ideal but often impractical; visionary while Banksian is of or pertaining to Joseph Banks, English botanist and naturalist.

As a noun utopian

is someone who supports or heralds the establishment of a utopia.