Synonyms of 'fantastic'
You use tremendous to emphasize how strong a feeling or quality is, or how large an amount is.
I felt a tremendous pressure on my chest.
I smiled sincerely, to encourage him to buy this unlikely story.
There are few more unreal worlds than that of the celebrity.
Something that is vast is extremely large.
farmers who own vast stretches of land
humongous or humungous (US, slang)
the visionary worlds created by fantasy writers
I don't like that guy - he's really weird.
A whimsical person or idea is unusual, playful, and unpredictable, rather than serious and practical.
He had an offbeat, whimsical sense of humour.
A wild idea is unusual or extreme. A wild guess is one that you make without much thought.
I was just a kid and full of wild ideas.
A world-class sports player, performer, or organization is one of the best in the world.
He was determined to become a world-class tennis player.
Zany humour or a zany person is strange or eccentric in an amusing way.
the zany humour of the Marx Brothers
Video: pronunciation of 'fantastic'
Thesaurus for fantastic from the Collins English Thesaurus
If you say that something is fantastic , you are emphasizing that you think it is very good or that you like it a lot .