1. obstetric of or relating to or used in or practicing obstetrics
  2. obstetrics the branch of medicine dealing with childbirth and care of the mother
  3. obstetrical of or relating to or used in or practicing obstetrics
  4. abstract existing only in the mind
  5. eccentric conspicuously or grossly unconventional or unusual
  6. obstetrician a physician specializing in childbirth
  7. obscure not clearly understood or expressed
  8. inside track the inner side of a curved racecourse
  9. obsolete no longer in use
  10. obstruct block passage through
  11. obstinate marked by tenacious unwillingness to yield
  12. fast track a rapid means of achieving a goal
  13. ostrich fast-running African flightless bird with two-toed feet
  14. abstruse difficult to understand
  15. obsequious attempting to win favor from influential people by flattery
  16. obstreperous noisily and stubbornly defiant
  17. isometric related by an isometry
  18. sidetrack wander from a direct or straight course
  19. egocentric limited to or caring only about yourself and your own needs
  20. bicentric having two centers

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