Participle agreement

Question

In the phrase 'ils se sont donné le mot' why is donné not plural ?

Chris Wirt · Accepted Answer

It isn't plural because the COD is le mot, and it comes after the participle. The reflexive pronoun se is only the COI (indirect object).

Maarten Kamp · Answer

The 2nd link is to a Wikipedia article. The first link is to a recent answer from Céline, which I think is the best detailed commentary with examples on this topic that I have come across - it should be included/linked in relevant lessons.
https://progress.lawlessfrench.com/questions/view/je-me-suis-fait-above-should-be-je-me-suis-faite-to-be-comsistent
 
 
 
 
https://en.wikipedia.org/wiki/French_verbs#Past_participle_agreement