vociferous

Adjective

vociferous (comparative more vociferous, superlative most vociferous)

1. Making or characterized by a noisy outcry; clamorous.
   • They crowded around him with vociferous welcome, Brown leading in a series of wild cheers.1909, Ralph Connor, chapter 17, in The Foreigner
   • No sooner had a waiting locomotive backed on to its train, the vociferous 4-6-4 or 4-8-4 re-emerged from under the bridge, and the two red marker lights on the last vehicles passed, than the headlight of the electric engine hauling the following train could be seen under the bridge and the waiting...1954 January, H. P. White, “Vignettes of the Rail”, in Railway Magazine, page 54, at Harmon station, New York
2. Vocally and forcefully opinionated.
   • Not even the most vociferous advocates of reform were willing to go to such lengths.
   • Lesbians Rising […] is known as one of the most vociferous groups working against social oppression of minority interests on campus.1976 December 25, Alan Bowne, “Lesbians Rising Makes an Impact at Hunter”, in Gay Community News, volume 4, number 26, page 10