too improbable to admit of belief

Having, showing, expressive of, or conducive to feelings of love or romance, Not based on fact; idealized or fictitious, Of or pertaining to romance; involving or resembling romance; hence, fanciful; marvelous; extravagant; unreal, noun_ a soulful or amorous idealist, A person who is behaving romantically, A follower or adherent of romanticism

So implausible as to elicit disbelief; unbelievable, Astonishing, extraordinary, or extreme, Amazing; astonishing; awe-inspiring, Marvelous; profoundly affecting; wonderful