Vociferous

vəˈsɪfərəs

adjective

expressing opinions or feelings loudly and forcefully

The word 'vociferous' is derived from the Latin word 'vociferari,' which means 'to shout.' When someone is described as being vociferous, it implies that they are vocal and outspoken in expressing their thoughts or emotions.

Next to Sermak himself, Lewis Bort was the most active in rallying those dissident elements which had fused into the now-vociferous Action Party.

Asimov, Isaac

Foundation 1 - Foundation

Many citizens, seeing the women flying toward the High Street, leaving their children crying at the open doors, hastened to don the cuirass, and supporting their somewhat uncertain courage with a musket or a partisan, directed their steps toward the hostelry of the Jolly Miller, before which was gathered, increasing every minute, a compact group, vociferous and full of curiosity.

Alexandre Dumas

The Three Musketeers

Their Sickles had been wasted, however; if anything, they seemed to have made Hermione more vociferous.

J. K. Rowling

Harry Potter and the Goblet of Fire