General:
* ex- (prefix meaning "former" or "out of")
* exacerbate (to make worse)
* exalt (to praise highly)
* exceed (to go beyond)
* excel (to be superior)
* except (excluding)
* excess (more than is needed)
* exchange (to give and receive)
* excite (to stimulate)
* exclude (to keep out)
* excuse (to justify)
* execute (to carry out)
* exhale (to breathe out)
* exhibit (to display)
* exile (to banish)
* exist (to be)
* exit (to go out)
* expand (to make larger)
* expect (to anticipate)
* expend (to use up)
* experience (to undergo)
* experiment (to test)
* explain (to make clear)
* explore (to investigate)
* explode (to burst)
* exploit (to take advantage of)
* expose (to reveal)
* extend (to make longer)
* exterior (outside)
* extinct (no longer existing)
* extract (to remove)
* extra (additional)
* extraordinary (remarkable)
* extricate (to free)
Related to People:
* ex-boyfriend/girlfriend
* ex-husband/wife
* ex-employee
* ex-student
* ex-convict
Others:
* exodus (a mass departure)
* exonerate (to clear of blame)
* exorbitant (excessively high)
* exoteric (easily understood)
* expiration (the act of expiring)
* exposé (a revealing report)
* expository (explanatory)
* expulsion (being forced to leave)
This is not an exhaustive list, but it provides a good starting point. Remember that the prefix "ex-" can be combined with many different words to create new meanings.