Crossword clues for the word: ISER The word ISER has appeared as an answer to at least 11 crossword clues on different crossword puzzles. Crossword clues for ISER Showing 1 to 11 of 11 results Clue(s) "Czech river, to a German" Czech river into the Elbe Czech river that is an Elbe tributary Czech river to Elbe Elbe tributary in Czechoslovakia Ninety miles of boating for Bohemians River of Bohemia. River on the rise River that may rise River to Elbe Tributary of the Elbe.