Yes it is, if it precedes the noun, as in "a well-known actress."
If it follows the noun, as in "the actress is well known," it is not hyphenated.
Well-to-do is a hyphenated word. The direction west-northwest is hyphenated.
well-known
well-being well-to-do west-northwest
No. Well above is not hyphenated.
No, well above average is not hyphenated.
It should be hyphenated when it is being used as an adjective.
It should be hyphenated.
Well-to-do and well-being are hyphenated words. Another hyphenated word is the direction west-northwest.
To-night At a certain moment in time "well-come" used to be hyphenated.
well-meant
Yes
bond