Meaning

verb declare formally; declare someone to be something; of titles

verb state or announce

verb affirm or declare as an attribute or quality of

originFrom Middle English proclamen, proclaime, from Old French proclamer, from Latin prōclāmō, prōclāmāre, from prō- (“forth”) + clāmō (“to shout, cry out”). Spelling altered by influence of claim, from the same Latin source (clāmō).

Etymology from Wiktionary, CC BY-SA 3.0