This is the 9564th most frequent French word.
délier
To untie or loosen.
In this sentence, 'délier' is used to express the action of untying a rope or string.
Il faut délier cette corde avant de mettre le bateau à l'eau.
You need to untie this rope before launching the boat.
Here, 'délier' is metaphorically used to describe loosening or making muscles more flexible.
Les exercices réguliers peuvent délier les muscles raides.
Regular exercises can loosen stiff muscles.
In this context, 'délier' is figuratively applied to indicate liberating someone's ability to speak freely.