1. apostatize abandon one's beliefs or allegiances
  2. abstract existing only in the mind
  3. apostatise abandon one's beliefs or allegiances
  4. obstetrics the branch of medicine dealing with childbirth and care of the mother
  5. obstinate marked by tenacious unwillingness to yield
  6. abstemious marked by temperance in indulgence
  7. opisthotonos severe spasm in which the back arches and the head bends back and heels flex toward the back
  8. abstruse difficult to understand
  9. epistaxis bleeding from the nose
  10. obstreperous noisily and stubbornly defiant
  11. hypostatize construe as a real existence, of a conceptual entity
  12. apostate not faithful to religion or party or cause
  13. epistasis the suppression of a gene by the effect of an unrelated gene
  14. supposititious based primarily on surmise rather than adequate evidence
  15. hypostatise construe as a real existence, of a conceptual entity
  16. Sebastodes rockfishes
  17. apostasy rejecting your religious beliefs, political party or cause
  18. abstentious self-restraining
  19. obstetric of or relating to or used in or practicing obstetrics
  20. past times the time that has elapsed