a common-law doctrine a civil-rights case a management-consulting firmOne type of compound adjective you never hyphenate is the one formed with an ‑ly adverb and (1) a true adjective, (2) a past participle, or (3) a present participle. Here are three examples:
a newly free nation a widely used procedure the rapidly increasing revenueIf, however, the adverb is not an ‑ly adverb, you do hyphenate the compound adjective if it precedes the modified noun. If it follows the modified noun, do not hyphenate it. Thus:
the well-known actor the actor is well knownFor a complete discussion on the use of the hyphen in compound adjectives, see the Punctuation section on Grammar.com. Click here for the beginning of that discussion.