well-lived or well lived? Hyphenate if it premodifies the noun: A well-lived life. Do not if it is a predicate adjective: His life was well lived.

Should well settled be hyphenated?

Well established or well-established? The approach is well established. It is a well-established approach. Use the hyphen when the expression occurs before the noun it modifies.

Is well loved hyphenated?

(Hyphenate: Well is an adverb followed by another descriptive word. They combine to form one idea in front of the noun.) The actress who accepted her award was well known. (Do not hyphenate: Well known follows the noun it describes, so no hyphen is used.)