French phrase
Je dois décliner ~.
Meaning
I have to decline ___.
When to use it
Expresses a need to refuse an offer or contract. It is often used in professional situations and can be followed by a reason.
Example dialogue
Je dois décliner cette offre.
I have to decline this offer.
D'accord, merci de m'en informer.
All right, thank you for letting me know.