D defs.my
Entry 2 senses Webster, 1913

Unavoidable

/ŭnˌ-əv-oid'-əb-əl/ · Un·a·void·a·ble · IPA /ˌʌnəˈvɔɪdəbəl/
01 a. Not avoidable; incapable of being shunned or prevented; inevitable; necessary; as, unavoidable troubles.
  1. 1.
    Not avoidable; incapable of being shunned or prevented; inevitable; necessary; as, unavoidable troubles.
  2. 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.