This is the 334th most frequent French word.
rester
To stay; to remain.
Here, 'rester' means 'to stay' or 'to remain' in a particular state or condition.
Il faut rester calme dans des situations stressantes.
It's important to stay calm in stressful situations.
In this context, 'rester' means 'to stay' or 'to lodge at a place temporarily.'
Pendant notre séjour, nous avons décidé de rester dans un petit hôtel près de la plage.
During our stay, we decided to stay in a small hotel near the beach.
In this sentence, 'rester' conveys the meaning of 'to remain' consistent or holding to a certain quality or belief.