noun
helpless; unsupported; without assistance
Describes a state of being without help, support, or backup; often used in formal or written contexts such as news reports.
無援の状態で戦い続けるしかなかった。
They had no choice but to keep fighting in a helpless state, without any support.
その地域は無援のまま取り残された。
That area was left behind without any assistance.