For the crossword clue “unalterable,” common answers include:

  • FINAL (5)
  • BINDING (7)
  • PERMANENT (9)
  • INALTERABLE (11)
  • UNCHANGEABLE (12)
  • INCOMMUTABLE (12)

Which one fits depends on your grid pattern and letter count. For example, a 5-letter answer is likely FINAL , while a 7-letter answer is often BINDING. If you share the pattern (like F_I_A_ or number of letters), the best-fit answer can be narrowed down further.

Information gathered from public forums or data available on the internet and portrayed here.