former
US /ˈfɔːr.mɚ/
UK /ˈfɔːr.mɚ/

1.
ancien, ex
having previously been a particular thing or in a particular role
:
•
The former president gave a speech.
L'ancien président a prononcé un discours.
•
She is a former student of this university.
Elle est une ancienne étudiante de cette université.
2.
premier, celui-là
denoting the first of two things or people mentioned
:
•
Of the two options, I prefer the former.
Des deux options, je préfère la première.
•
He discussed both the benefits and drawbacks; the former were numerous.
Il a discuté des avantages et des inconvénients ; les premiers étaient nombreux.