mid 19th century (in sense 2): from Latin, 'out of'.
A former husband, wife, or other partner in a relationship: I don’t want my ex to spoil what I have now
More example sentences
- Before all the women who came before our wives or our exes, we were brothers.
- I'd like to think that relations with exes could be dealt with efficiently, professionally and intelligently.
- We have good relationships with my exes (except for my youngest's father) and their parents.
early 19th century: independent usage of ex-1.