Is it really a sarcasm marker? I've always thought it's equivalent to že in Slavic languages (both probably from the same PIE *g(h)e), and in those languages, i

Is it really a sarcasm marker? I've always thought it's equivalent to že in Slavic languages (both probably from the same PIE *g(h)e), and in those languages, it can be used sarcastically, but its main meaning is 'in fact', 'as for X'. For example in Russian: on že glup = 'he is, in fact, a fool' or 'as for him, he's a fool - didn't you know?' Similarly, dictionaries translate the Greek ge as 'in fact, indeed.' If you mentally replace most instances of Ancient Greek ge with the Slavic že in Greek texts, it all starts making a lot of sense (if you're a speaker of a Slavic language). P.S. There's also a limiting sense in the dictionary, with the example given: Greek: ho de ge (+ participle) Russian: tot že (kto) English: but the one (who)