Crossword clues for the word: HEIRAPPARENT The word HEIRAPPARENT has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for HEIRAPPARENT Showing 1 to 6 of 6 results Clue(s) Indefeasible legatee Likely successor to the throne Monarch's eldest son, typically Next in line to a throne One next in line for the throne Person set to to succeed