When should non be hyphenated with a word?

The prefix "non" should be hyphenated when it precedes a proper noun or when it helps clarify the meaning of the Word it modifies. For example, "non-English" is hyphenated to specify that it refers to something not related to the English language. In contrast, "nonprofit" is typically written as one Word without a hyphen. Always consider clarity and readability when deciding whether to hyphenate.