Meaning of “proclaim” - Learner’s Dictionary

proclaim

verb [ T ] us uk /prəʊˈkleɪm/ formal

to announce something officially or in public

proclamation noun [ C ] us uk /ˌprɒkləˈmeɪʃən/

an official announcement about something important

(Definition of “proclaim” from the Cambridge Learner’s Dictionary © Cambridge University Press)