vociferous
adjective
[ və(ʊ)ˈsɪf(ə)rəs ]
• expressing or characterized by vehement opinions; loud and forceful.
• "he was a vociferous opponent of the takeover"
Similar:
vehement,
outspoken,
vocal,
forthright,
plain-spoken,
frank,
candid,
open,
uninhibited,
direct,
earnest,
eager,
enthusiastic,
full-throated,
vigorous,
insistent,
emphatic,
demanding,
clamorous,
strident,
loud,
loud-mouthed,
raucous,
noisy,
rowdy,