Breakdown of Nie wiadomo, dlaczego ten mężczyzna zaginął.
nie
no / not
ten
this (m)
mężczyzna
man
dlaczego
why
Questions & Answers about Nie wiadomo, dlaczego ten mężczyzna zaginął.
How exactly does "nie wiadomo" function in this sentence without a subject?
The words wiadomo and nie wiadomo are impersonal predicates. This means they express a general state, like "it is known" or "it is not known", without ever using a grammatical subject like "to" (it) or "nikt" (nobody). In this sentence, nie wiadomo perfectly sets up the indirect question starting with the Wh- word dlaczego, expressing general uncertainty about the situation.
Is the comma before "dlaczego" strictly necessary here?
Yes, it is mandatory. Unlike English, which drops the comma before indirect questions ("It is unknown why..."), Polish grammar strictly requires a comma to separate the main clause (nie wiadomo) from the subordinate clause (dlaczego ten mężczyzna zaginął).
What is the difference between "zaginąć" used here and "zgubić się"?
While both can be translated as getting lost, zaginął is used for serious disappearances where a person's whereabouts are entirely unknown, often triggering a police search. The phrase zgubił się typically just means someone temporarily lost their way, like getting turned around in a new city or a child wandering off in a supermarket.
Could the word order in the second part be "dlaczego zaginął ten mężczyzna"?
Absolutely, because Polish word order is flexible. The current order (dlaczego ten mężczyzna zaginął) feels very neutral. If you placed ten mężczyzna at the very end, it would place slightly more spoken emphasis on the specific man who disappeared, rather than the act of disappearing itself.