propose a toast
US /prəˌpoʊz ə ˈtoʊst/
UK /prəˌpoʊz ə ˈtoʊst/

1.
proposer un toast, porter un toast
to suggest that people raise their glasses and drink to someone or something in honor or celebration
:
•
I'd like to propose a toast to the happy couple.
J'aimerais proposer un toast aux heureux mariés.
•
Let's propose a toast to our success!
Buvons un toast à notre succès !