Context: The word slovo ("word") and the related slava ("fame") and slukh ("hearing") originate from the Proto-Indo-European root *ḱlew- ("be spoken of, fame"), cognate with Ancient Greek κλῆς (klês - "famous"), whence the name Pericles, and Latin clueo ("be called"), and English loud.

Question: Slovo, slava, and slukh all originate from what Proto-Indo-European root?

Answer: *ḱlew