äänekkäämmän
"Äänekkäämmän" is the comparative form of the Finnish adjective "äänekäs," which translates to "loud," "noisy," or "vocal." Therefore, "äänekkäämmän" means "louder," "noisier," or "more vocal."
In Finnish grammar, adjectives change their form to indicate comparison. The superlative form would be "äänekkäimmän,"