/ˈæm.bəˌseɪ.t/ or /ˌæm.bəˈseɪ.t/ (AM-buh-SAY-t or AM-buh-SAY-tee)

Definitions

1. verb

to act as an ambassador; to represent or advocate for a particular group, cause, or nation

“The diplomat was sent to ambassiate for the country in the international negotiations.”