←
English thack (doublet)
←
Middle English thakken (inherited)
←
Proto-Indo-European *teh₂g- (root)
←
Proto-Indo-European *teh₂g- (inherited)
←
Icelandic þjaka (mention)
←
Norwegian tjåka (cognate)
←
Old Norse þykkr (cognate)
→
English whack (mention)