harangue
Harangue (noun) means a forceful public speech that argues strongly for something.
Etymology
From Middle English arang and French harangue, from Old Italian aringa (modern Italian arringa) from aringare (“speak in public”) (modern Italian arringare), from aringo (“public assembly”), from Gothic *𐌷𐍂𐌹𐌲𐌲𐍃 (*hriggs) or a compound containing it, akin to Old High German hring (“ring”) (whence German Ring). Doublet of range, rank, ring, and rink.