||Cognacy doubtful. Comments made duplicated in notes to /cognate/2588/: If IE *reu- (Buck 1949: 498), Greek appears to have a root extension in -k-, i.e. *h₃reu̯-k- (Beekes 2010); LIV² reconstructs *h₃reu̯k- citing OIr. luñc- 'rupfen' and Lat. runcō 'jäten' as cognates based on nasal present stems *h₃ru-né/n-k-, which Greek potentially continues a yod-present *h₃ruk-i̯é-, without mention of Baltic or Slavic cognates.