What does the prefix ex mean?
The prefix "ex-" means not
The prefix ex means out of; outside of; from. Some words that start with the prefix ex are: excavate, exchange, exclude, excrete, exfoliate, exhale, expel, expend, extern, external, extinct, extortion, extreme, extremity, extrude, exude, and so on. The prefix ex also means former, and in this case it is hypenated: ex-friend, ex-spouse, ex-Muslim.