Causer vs. occasionner vs. provoquer

The French words 'causer', 'occasionner', and 'provoquer' all translate to the English verb 'to cause', but they each have their own nuances and specific contexts in which they are used. While they are sometimes interchangeable, understanding the subtleties can help you choose the right word for the right situation.

Causer

'Causer' generally implies causing something in a manner that can either be direct or indirect, often used in casual conversation or non-technical contexts.
Elle a causé un petit incident lors de la fête.
(She caused a small incident during the party.)
Ses remarques ont causé une certaine tension.
(His remarks caused some tension.)

Occasionner

'Occasionner' is somewhat more formal than 'causer' and often implies that the cause resulted in an inconvenience or damage, sometimes highlighting the consequence more so than the act of causing.
La grève a occasionné des retards dans les livraisons.
(The strike caused delays in deliveries.)
L'accident a occasionné de gros bouchons sur l'autoroute.
(The accident caused major traffic jams on the highway.)

Provoquer

'Provoquer' tends to convey a sense of intention or challenge, often used when the cause is deliberate or when emphasizing the strong impact of the cause. It can also be used in scientific contexts to denote the triggering of something.
Ses provocations ont provoqué une bagarre dans le bar.
(His taunts provoked a fight in the bar.)
La rencontre du chaud et du froid a provoqué de fortes intempéries.
(The combination of hot and cold weather caused severe bad weather.)

Summary

In summary, 'causer' is your go-to for general use, akin to saying something has been caused with a neutral tone; 'occasionner' is more formal and stresses on inconvenient outcomes; and 'provoquer' carries a connotation of intentionality or significant impact, bearing a stronger and sometimes more technical or confrontational tone than the other two words. Knowing these nuances will allow you to communicate more precisely in French.