Difference between Unbelievable and Fantastic

UNBELIEVABLE vs FANTASTIC: NOUN

An eccentric person.
One who acts fantastically or ridiculously; a grotesque. Sometimes used in the plural of a company of persons grotesquely dressed, and acting or parading in a ludicrous way, for amusement.
A person given to fantastic dress, manners, etc.; an eccentric person; a fop.

Strange or fanciful in form, conception, or appearance.
Based on or existing only in fantasy; unreal.
Ludicrously odd
Extravagantly fanciful and unrealistic; foolish
Unrealistic; irrational.
Exceedingly or unbelievably great
Extraordinarily good; used especially as intensifiers
Existing in fancy only
Exceedingly great in size or degree; extravagant.
Extravagantly fanciful in design, construction, appearance
Extraordinarily good or great ; used especially as intensifiers
Existing only in imagination; fanciful; imaginary; not real; chimerical.
Having the nature of a phantom; unreal.
Indulging the vagaries of imagination; whimsical; full of absurd fancies; capricious
Resembling fantasies in irregularity, caprice, or eccentricity; irregular; oddly shaped; grotesque.
Existing in or constructed from fantasy; of or relating to fantasy; fanciful.
Not believable; implausible; seemingly only possible in fantasy.
Wonderful; marvelous; excellent; extraordinarily good or great (used especially as an intensifier).
Fanciful and unrealistic; foolish
Wonderful or superb; remarkable.

Of the nature of a phantom or fantasy; produced or existing only in imagination; imaginary; not real.
Due to fantasy or whim; arising from or caused by caprice; groundless; illusive.
Morbidly or grotesquely fanciful; manifesting a disordered imagination; chimerical.
Suggestive of fantasies through oddness of figure, action, or appearance, or through an air of unreality; whimsically formed or shaped; grotesque.
Controlled by fantasy; indulging the vagaries of imagination; capricious: as, fantastic minds; a fantastic mistress.
Synonyms Grotesque, etc. (see fanciful); odd, qneer, strange, freakish, quaint.
Foolish
Fanciful and unrealistic
Used especially as intensifiers
Extraordinarily good or great

Dumfounding, Marvellous, Tall, Unlikely, Undreamed, Unconvincing, Unimagined, Undreamt, Dumbfounding, Implausible, Improbable, Fabulous, Marvelous, Astounding, Incredible

Rattling, Howling, Unrealistic, Grotesque, Unusual, Fantastical, Strange, Wondrous, Extraordinary, Unreal, Tremendous, Phenomenal, Marvelous, Wonderful, Terrific

Dumfounding, Marvellous, Tall, Unlikely, Undreamed, Unconvincing, Unimagined, Undreamt, Dumbfounding, Implausible, Improbable, Fabulous, Marvelous, Astounding, Incredible

Rattling, Howling, Unrealistic, Grotesque, Unusual, Fantastical, Strange, Wondrous, Extraordinary, Unreal, Tremendous, Phenomenal, Marvelous, Wonderful, Terrific

The facts in this case are almost unbelievable.
Completely unbelievable premise, not in a good way.
It means that she got her unbelievable orgasm.
Unbelievable that any service cannot cope with GRs.
Unbelievable answer and zero empathy tonsolve the situation.
And we had an unbelievable amount of leftovers.
Today it all seems rather ridiculous and unbelievable.
Your satisfaction is our top priority and we want you to feel that you got an unbelievable deal at an unbelievable price.
And we would find like unbelievable points, unbelievable points.
Of all the unbelievable suppositions, this seems to be the most unbelievable.

Seeing that from an opposition party is fantastic.
Show off your waist for a fantastic look.
Fantastic post and I hope you get paid!
Working with you indeed is a fantastic experience.
It is extremely portable and with fantastic ergonomics.
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The tour was fantastic and we got to see a great deal of IReland and the Castles which we stayed at were fantastic.
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