Why Do They Say Well Met?

"Well met" appears to have been added to the phrase in the 16th century to intensify its friendliness, and derives from the concept of "good to meet you", and also from the meaning of "meet" as something literally the right size for a given situation.

Does Well met mean hello?

Well-met meaning

(archaic) A greeting. (archaic) Welcome, greeted.

Is Well met a greeting?

The second part, Well met, was also a greeting: roughly 'it's good that we've met', according to World Wide Words. ... If the expression sounds archaic or old-fashioned to you, you'd be right – it dates to the sixteenth century at least.