To congratulate someone in a formal manner

Solution (By Examveda Team)

One word substitute is Felicitate.

Wish: feel or express a strong desire or hope for something that cannot or probably will not happen.
Solemnize: duly perform (a ceremony, especially that of marriage).
Celebrate: acknowledge (a significant or happy day or event) with a social gathering or enjoyable activity.
Felicitate: congratulate.