To lose feeling in a part of the body, often due to cold, or to become emotionally unresponsive.
The icy water quickly benumbed his hands, making it hard to feel anything.
氷のような水がすぐに彼の手を麻痺させ、何かを感じることが難しくなりました。
To stun someone emotionally or mentally, making them unable to think or react.
The sudden loss of her job left her benumbed and unsure of what to do next.
彼女は急に職を失い、何をすべきか不確実で麻痺してしまった。