Yes. I’m also going to doubt that anybody in this thread was speaking Greek when they used the word narcissist, given that all these comments are in english.
4 points
English mugs other languages and their associated grammatical rules all the time, especially Greek and Latin, and especially especially words related to mythological figures, like Herculean, Titanic or indeed, Narcissistic.
English isn’t a person, it’s a language. The root word narcissism was pulled into english by people. Those people were late 19th century psychologists.