No.
avow
declare, reveal, publish
denote, or inform.
advise, announce, declare, communicate, express, inform, instruct
claim, charge, challenge, state, maintain, declare, assert, uphold
state, communicate, convey, articulate, say, word, voice, declare, show, indicate, demonstrate, reveal, intimate, signify
state, communicate, convey, articulate, say, word, voice, declare, show, indicate, demonstrate, reveal, intimate, signify
Because the girl was so arrogant, she had very few friends.
Exceptional, Miraculous, Notable, Significant, Wonderful
announcement, proclamation, decree, notification, edict, pronouncement
By itself, 'proclaim' is neither. It is simply a verb. A synonym is a word with a similar meaning. To state, declare, say etc are synonyms of 'proclaim'. But to give examples of antonyms (opposites) of proclaim is a little trickier. Not all words have antonyms. But doubtless someone will suggest a few....