Remove oneself from an obligation
Synonyms:
  1. back down
  2. avoid
  3. back-out
  4. beg-off
  5. back-off
  6. cop out
  7. funk out
  8. get-cold-feet
  9. give-way
  10. have no stomach for
  11. pull out
  12. make concessions
  13. shy from
  14. weasel-out
  15. wimp-out
  16. worm out
  17. yield
  18. bow-out