profligate
definition
recklessly extravagant or wasteful in the use of resources
example
His profligate spending habits quickly drained his savings and put him in debt.
synonyms
extravagantwastefulreckless
word origin — From the Latin 'profligatus', the past participle of 'profligare', meaning 'to dash down, overthrow' or 'to waste' (from 'pro-' meaning 'away, forth' + 'fligere' meaning 'to strike').