This is the 726th most frequent French word.
resté
"Resté" means "stayed" or "remained" in English.
This usage of 'resté' highlights the continuation of a relationship or connection. It is seen in the plural form 'restés' to agree with the plural subject.
Nous sommes restés en contact après l'école.
We stayed in touch after school.
Here, 'resté' is used as the past participle of the verb 'rester', which means 'to stay'. It is part of the passé composé tense used to express past actions.
Je suis resté à la maison toute la journée.
I stayed at home all day.
In this context, 'resté' depicts maintaining a particular state or condition, here the calmness. It is again in the passé composé tense.