I read a sentence in Word by Word by Kory Stamper which was:
Many people - and many people who think they'd be good at this lexicography gig - believe that the dictionary is some great guardian of the English language, that its job is to set boundaries of decorum around this profligate language like great linguistic housemother setting curfew.
I don't see how the dictionaries' definitions (wastefully extravagant) of the word profligate fit into the context. I want to ask how a language can be extravagant.