Unavoidable /(?)/

Un·a·void·a·ble

Unavoidable

a.
  1. Not avoidable; incapable of being shunned or prevented; inevitable; necessary; as, unavoidable troubles.
  2. Not voidable; incapable of being made null or void. (Law)

Phrases & Compounds
Unavoidable hemorrhage
hemorrhage produced by the afterbirth, or placenta, being situated over the mouth of the womb so as to require detachment before the child can be born.