Yes, well-being is a hyphenated word.
It should be hyphenated when it is being used as an adjective.
Yes it should be hyphenated.
It should be hyphenated when it's an adjective.
without a hyphen idiot
Yes!
Yes it should be hyphenated: well-liked.
No, "a well know" is not a correct phrase. It should be "a well-known" with a hyphen to make it an adjective.
No.
Here is an example of using a hyphen correctly: Justin was purpose-driven by his motivation to finish well.
It is never one word: there is no such English as "indepth." But you should definitely separate the words "in depth," or more commonly, put a hyphen between them: "in-depth analysis." This is probably more correct because "in-depth" is a compound adjective (this occurs when two words are put together with a hyphen to form an adjective; other examples are "well-deserved" and "long-awaited").
The correct spelling is well known. A well known author or a well-known company (the hyphen is optional).
It looks like a short horizontal line. Well-known