fantastically

UK: /fænˈtæstɪkəli/

Collins Concise English Dictionary © HarperCollins Publishers::

fantastically / fænˈtæstɪkəlɪ/ adverb

1. in a fantastic manner
2. (intensifier): it's fantastically cheap

WordReference Random House Learner's Dictionary of American English © 2026

fan•tas•tic /fænˈtæstɪk/   adj. 

1. thought of and created by an unrestrained imagination;
   grotesque:
   fantastic rock formations.
2. not based on reality;
   imaginary;
   irrational:
   fantastic fears.
3. extremely great:
   a fantastic salary.
4. Informal Terms extraordinarily good:
   a fantastic musical.

fan•tas•ti•cal•ly, adv. 

WordReference Random House Unabridged Dictionary of American English © 2026

fan•tas•tic  (fan tas′tik), adj. 

1. conceived or appearing as if conceived by an unrestrained imagination;
   odd and remarkable;
   bizarre;
   grotesque:
   fantastic rock formations; fantastic designs.
2. fanciful or capricious, as persons or their ideas or actions:
   We never know what that fantastic creature will say next.
3. imaginary or groundless in not being based on reality;
   foolish or irrational:
   fantastic fears.
4. extravagantly fanciful;
   marvelous.
5. incredibly great or extreme;
   exorbitant:
   to spend fantastic sums of money.
6. highly unrealistic or impractical;
   outlandish:
   a fantastic scheme to make a million dollars betting on horse races.
7. Informal Terms extraordinarily good:
   a fantastic musical.

Also, fan•tas′ti•cal. 

• Greek phantastikós able to present or show (to the mind), equivalent. to *phantad-, base of phantázein to make visible (akin to phānós light, bright, phaínein to make appear) + -tikos -tic
• Medieval Latin fantasticus, variant of Late Latin phantasticus
• Middle English fantastik pertaining to the imaginative faculty 1350–1400

fan•tas′ti•cal•ly, adv. 
fan•tas′ti•cal•ness, fan•tas′ti•cal′i•ty, n. 
Synonyms

• 1. Fantastic, bizarre, grotesque share a sense of deviation from what is normal or expected.
  Fantastic suggests a wild lack of restraint, a fancifulness so extreme as to lose touch with reality:
  a fantastic scheme for a series of space cities.
  In informal use,
  fantastic often means simply "exceptionally good'':
  a fantastic meal.
  Bizarre means markedly unusual or extraordinarily strange, sometimes whimsically so:
  bizarre costumes for Mardi Gras; bizarre behavior.
  Grotesque implies shocking distortion or incongruity, sometimes ludicrous, more often pitiful or tragic:
  a grotesque mixture of human and animal features; grotesque contrast between the forced smile and sad eyes: a gnarled tree suggesting the figure of a grotesque human being.