Rule: Use the hyphen with the prefix re only when re means again AND omitting the hyphen would cause confusion with another word. ... Re means again AND omitting the hyphen would cause confusion with another word so hyphenate. Pop Quiz: It is good to re-examine your priorities every few years.

Is it re-examine or reexamine?

Whenever you take another careful look at something, you reexamine it. The verb reexamine adds the "again" prefix re- to examine, from the Latin examinare, "to test, try, consider, or ponder."

How do you write re-examine?

or re-ex·am·ine

verb (used with object), re·ex·am·ined, re·ex·am·in·ing. to examine again.