Icelandic þykkur

← English thick (link)

← Proto-Germanic *þekuz (derived)

← Old High German dicki (mention)

← Old Norse þykkr (derived)

→ English thick (cognate)

→ Old English þicce (cognate)

→ Icelandic hnausþykkur (mention)

→ Icelandic þykkni (affix)

→ Luxembourgish déck (cognate)