How many letters does the top answer for “a loud bombastic declamation expressed with strong emotion” have?

The most common answer is harangue (8 letters).

Crossword clue: a loud bombastic declamation expressed with strong emotion

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

harangue 8 letters wn-def

deliver a harangue to; address forcefully

ranting 7 letters wn-def

a loud bombastic declamation expressed with strong emotion