The topic of the present volume is etymological research into Czech in wider Slavonic, Indo-European and General Linguistics perspectives. First versions of most of the texts were presented at the international conference Etymological Symposium Brno 2017: Etymological Research into Czech, organized by the Etymological Department of the Institute of the Czech language of the AS CR, and held in Brno, Czech Republic, on 12–14 September 2017.