This is the 2410th most frequent French word.
rétablir
To restore or re-establish.
In this case, 'rétablir' is used to mean 'restore' or 'put back into balance.'
Il a pu rétablir l'équilibre dans son travail après une période difficile.
He was able to restore balance in his work after a difficult period.
Here, 'rétablir' refers to returning health or well-being to its original state.
Le médecin espère rétablir sa santé rapidement.
The doctor hopes to restore his health quickly.
In this context, 'rétablir' means to recover or reinstate a former state or opinion.