un ‧ a ‧ void ‧ a ‧ ble /ˌʌnəˈvɔɪdəb ə l/ BrE AmE adjective
[ Word Family: verb : ↑ avoid ; noun : ↑ avoidance ; adverb : ↑ unavoidably ; adjective : ↑ avoidable ≠ ↑ unavoidable ]
impossible to prevent:
There are now fears that war is unavoidable.
—unavoidably adverb :
Molly was unavoidably delayed.