Huge fantastic figure put on a two-wheeled carriage (8)
I believe the answer is:
gigantic
'huge' is the definition.
(synonyms)
'fantastic figure put on a two-wheeled carriage' is the wordplay.
'fantastic figure put' becomes 'antic' (I can't explain this - if you can you should believe this answer much more).
'on' means one lot of letters go next to another.
'a two-wheeled carriage' becomes 'gig' (I've seen this in another clue).
'antic' after 'gig' is 'GIGANTIC'.
Can you help me to learn more?
(Other definitions for gigantic that I've seen before include "Great big" , "Stupendous" , "Exceedingly large" , "Huge, enormous" , "Of very great size" .)