订婚英语怎么说

"订婚"的英文是"engagement". 这个词源于中世纪拉丁语"in + gaudere"，原意为"喜悦"，后来演变为指"承诺"或"婚姻订婚".

例句：

I'm thrilled to announce my engagement to the love of my life!
We're so happy to celebrate our engagement with all of our friends and family.
Congratulations on your engagement! Wishing you both a lifetime of love and happiness.