Is 'single-handed' or 'single-handed' the correct idiom?

There are many idioms in folklore that have been misspelled. We use them so often that it becomes a habit without realizing that we are saying or writing them wrong.

According to experts, this idiom is used to describe being alone, without anyone to help or support you in your work.

So, what do you think is the correct original version of this proverb? Leave your answer in the comment box below.

Kim Nha

Source: https://vtcnews.vn/don-phuong-doc-ma-hay-don-thuong-doc-ma-moi-chuan-thanh-ngu-ar904814.html