1.
powerlessness, helplessness, impotence
The state of lacking power, ability, or influence to affect a situation. Often conveys a sense of frustration or resignation.
Common patterns
Used as a noun and also as a na-adjective (無力な). The form 無力さ (with the nominalizer さ) is very common for expressing the feeling of powerlessness.
Usage
Often appears in reflective or emotional contexts where someone confronts their inability to change a situation. Common in personal essays, speeches, and narratives about natural disasters, illness, or social injustice.