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English definition of “fantastic”

fantastic

adjective uk   /fænˈtæs.tɪk/ us  

fantastic adjective (GOOD)

A2 informal extremely good: You look fantastic in that dress. We had a fantastic time. They've won a holiday? How fantastic!

fantastic adjective (NOT REAL)

(also fantastical,   /-tɪ.kəl/   ) strange and imaginary, or not reasonable: He drew fantastic animals with two heads and large wings. fantastical tales (= about imaginary things) very unusual, strange, or unexpected: It seemed fantastic that they still remembered her 50 years later.

fantastic adjective (LARGE)

A fantastic amount is very large: She must be earning a fantastic amount of money.
fantastically
adverb uk   /-tɪ.kəl.i/ us  
B2 They're fantastically rich. They're doing fantastically well.
(Definition of fantastic from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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