Learn French: Une trahison peut détruire une relation durable. - A betrayal can destroy a lasting relationship.

Nouns ending in -ison are almost always feminine in French. You can group it mentally with other common words you likely already know, such as la maison (the house), la saison (the season), and la raison (the reason).

Is trahison related to a specific verb?

Yes, it is the noun form of the verb trahir, which means to betray. When pronouncing trahison, remember that the h is silent, and the single s sounds like a "z" because it sits between two vowels.

Is relation the best word to use for a romantic relationship in French?

Yes, une relation is commonly used for a romantic relationship, just like in English. You might also encounter the word une liaison, but be careful: while it can mean a general link or connection, in a romantic context une liaison usually implies an affair or a secret relationship. Une relation is the standard, neutral term.

Does durable mean the same thing as the English word "durable"?

It can mean physically tough or hard-wearing, but in French, durable is much more commonly used to mean lasting or long-term, as it describes the relationship here. At a B2 level, it is also crucial to know that durable translates to sustainable in ecological contexts, such as le développement durable (sustainable development).