This is the 9367th most frequent French word.
devons
"Devons" means "must" or "have to" (first-person plural of "devoir").
In this sentence, 'devons' is used to express obligation or necessity.
Nous devons partir tôt demain matin.
We must leave early tomorrow morning.
Here, 'devons' conveys the necessity of maintaining attention in an educational context.
Nous devons être attentifs en classe.
We must be attentive in class.
In this case, 'devons' represents an imperative to focus on personal well-being.