Below you can find the The greek gods swore their most solemn oaths in the name of this river of hades Jeopardy Words Answer. The answer to The greek gods swore their most solemn oaths in the name of this river of hades has 4 letters. This clue belongs to the Mythmash category and is part of Jeopardy Word Level 1077. If you scroll near the bottom you will find other clues and answers part of level 1077