1.
letting someone die; abandoning someone to their fate
The act of watching someone suffer or die without intervening, despite being able to help. Also used figuratively for abandoning someone in difficulty or letting a situation deteriorate without acting.
Almost always used in the pattern 見殺しにする (to abandon someone to their fate). Carries a strong moral accusation — it implies the person could have helped but chose not to.
Common patterns
The figurative use is common in political and social commentary, where 見殺し does not literally mean death but rather neglecting people in need.