This refers to someone who relies on others for support or is perceived as being parasitic in nature. It implies a negative connotation, indicating someone who is not self-sufficient or is a burden to others.

This usage describes a person who is treated with indifference or lack of warmth by others, often implying social rejection or emotional distance.

This historical usage refers specifically to the position of younger sons during the Edo period in Japan, who were often left without an inheritance and were thus seen as having fewer prospects.