(in the habit of) wasting money etc; (of ideas, speech, behaviour) going beyond what is reasonable; not properly controlled
indulgent, wasteful
Cases of word usage
1) extravagant behaviour designed to attract attention to oneself (exhibitionism)
2) (of a person) friendly; talkative; extravagant (expansive)
3) wild or extravagant creative thought or mental pictures (fantasy)
4) shocking; offensive; far too large or extravagant (outrageous)
5) of a person, behaviour) shamelessly immoral; (of the spending of money) very extravagant (profligate)
6) very plentiful; extravagant (profuse)