Feeling intoxicated, I flaunt novel that's pretentious
I believe the answer is:
'that's pretentious' is the definition.
(similar in meaning)
'feeling intoxicated i flaunt' is the wordplay.
'feeling' becomes 'high' (I am not sure about this - if you are sure you should believe this answer much more).
'intoxicated' is an anagram indicator.
'iflaunt' with letters rearranged gives 'falutin'.
'novel' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for highfalutin that I've seen before include "Pompously pretentious" , "Inflated" , "Pompous" .)