This is the 1496th most frequent French word.
diplomatique
Diplomatic.
The word "diplomatique" in this sentence refers to the manner of conducting affairs with tact and sensitivity, implying the use of diplomacy.
Le gouvernement a adopté une approche diplomatique pour résoudre le conflit.
The government adopted a diplomatic approach to resolving the conflict.
Here, "diplomatique" describes a response given in a tactful way, likely phrased to minimize possible offense or tension.
Elle a offert une réponse diplomatique pour éviter toute confrontation.
She offered a diplomatic response to avoid any confrontation.
In this sentence, "diplomatique" pertains to matters or objects (in this case, mail) related to diplomatic service or international relations.