Context: The Slavic autonym *Slověninъ is usually considered (e.g. by Roman Jakobson) a derivation from slovo "word", originally denoting "people who speak (the same language)," i.e. people who understand each other, in contrast to the Slavic word denoting "foreign people" – němci, meaning "mumbling, murmuring people" (from Slavic *němъ – "mumbling, mute").

Question: What slavic word denotes "people who speak the same language?"
Answer: slovo

Question: What slavic word denotes "foreign people?"
Answer: němci

Question: Who considered *Slověninъ do be a derivation from slovo?
Answer: Roman Jakobson

Question: Who came up with the Slavic autonym?
Answer: Unanswerable

Question: What does slovo derive from?
Answer: Unanswerable

Question: What word did Roman Jakobson use to call Slavics foreign people?
Answer: Unanswerable

Question: What word did Jackobson use to mean mute?
Answer: Unanswerable