This is the 4740th most frequent Dutch word.
ex
Former partner.
The word 'ex' refers to a former romantic partner, generally used informally and often to denote someone with whom the speaker had a previous relationship, be it marital or romantic.
Mijn ex heeft mij gisteren gebeld.
My ex called me yesterday.
Here, 'ex' is used as a prefix indicating someone who held a previous role or position but no longer holds it, signifying something that has ended or changed.
Als ex-leider van het team, heeft hij veel ervaring.
As a former leader of the team, he has a lot of experience.
In this example, 'ex' appears as part of the word 'exoplaneten', which is derived from Greek roots (exo- meaning outside and planet meaning wanderer), referring to planets outside the solar system.