on the danger list Definition

danger
noun

1. A situation or state in which someone or something may suffer harm, an injury or a loss.

Example: in danger of falling
2. Something that may cause harm, injury or loss.

Thesaurus: hazard, trouble, peril, menace, threat; Antonym: safety, security.
3. A possibility of something unpleasant happening.

Idiom: on the danger list

So ill or seriously injured that there is a high risk of death.

Etymology: 14c in this form; 13c as daunger: from French dangier power, therefore ‘power to harm'.