Ed:

There is no rule that says it is wrong. It is just awkward and unpopular.

"Well" does NOT mean "very". It means, when used in this sense, "to a satisfactory or significant degree". as in "well away", "well nigh", "well along in years".

It also of course means "in a good way" as in "he was well-served" or "well turned out". It also means good in general, as "He is well".

"Well good" is a dialectal expression, not mainstream or standard English, but it has a certain ring to it, because it harkensd back to older usages like the expression "Well and good". I wouldn't worry about it. It may be unusual, but it certainly, to my mind, has enough precedent to be "legal",


A