at one's own peril

Prepositional phrase

Knowingly accepting the risks associated with one's action.

Japanese Meaning

自己責任で / 自らの危険を承知の上で / 自分の危険を負って

Anyone who ignores the warning signs and walks into the abandoned building does so at one's own peril.

警告表示を無視して廃墟になった建物に入る人は自己責任で行動することになる。

Sense（1）

Knowingly accepting the risks associated with one's action.