Definition & Meaning of "words [fail] {sb}"

What is the origin of the idiom "words fail someone" and when to use it?

The idiom "words fail someone" originated in the English language as a way to convey the idea that someone is so deeply moved, shocked, or overwhelmed by a situation or emotion that they find it difficult to express their thoughts or feelings adequately through words. The word "fail" is often used in brackets to indicate that the speaker might feel like their words are insufficient to capture the depth of their emotions or the significance of what they are experiencing.