vociferous: implies a vehement deafening shouting or calling out: ~ cries of protest and outrage; or an insistent urgent presentation of requests, excuses, or demands: made ~ demands.


clamorous: may imply insistence as well as vociferousness in demanding or protesting: ~ demands for prison reforms.


blatant: implies an offensive bellowing or insensitive, conspicuous, or vulgar loudness: a ~ and abusive drunkard.   (bellow吼叫，记忆: blatant和bellow吼叫开头发音接近，如he bellowed out the order他大吼着发出命令)


strident: suggests a harsh and discordant noise: heard the ~ cry of the crowd.


boisterous: suggests a noisiness and turbulence due to high spirits and release from constraint: a ~ crowd of partygoers.     (注意是turbulence不是turbulance，turbulence除了骚动波动还表示涡流或气旋，如飞机遇到气旋)


obstreperous: suggests unruly and aggressive noisiness and resistance to restraint or authority: the ~ demonstrators were removed from the hall.     (aggressive激进,unruly不服管制)


vociferous吵闹: 强烈震耳的吵嚷，或表示急切坚持地请求要求辩解，clamorous吵闹: 形容要求或抗议时坚持而大声，blatant吼叫: 冒犯无感粗俗的大声或吼叫，strident刺耳: 让人难受的不和谐的噪音，boisterous喧闹: 由于精神高兴或摆脱束缚而显得喧哗骚动，obstreperous吵闹: 表示激烈不服管束地吵闹


记忆方法: 1) VCBSBO排序成VOC语音和Bulletin Board System留言板BBS<==吵闹     VOC是语音voice的标准缩写，也是表示语音的词根

          2) 吵闹的意思是大声说话引人注意mean so loud or insistent as to compel attention.VCBSBO排序成VOC语音和Bulletin Board System留言板BBS<==吵闹