pugnacious
词根词缀：
impugn v. 抨击
im 加以… + pugn 打斗 → 加以打击 → 抨击
pugnacious adj. 好斗的
pugn 打斗 + acious 多…的 → 多打斗的 → 好斗的
repugnance n. 反感
re 相反 + pugn 打斗 + ance 表状态，repugnant的名词 → 反感
repugnant adj. 反感的
re 相反 + pugn 打斗 + ant …的 → 反击 → 反感的
数据来源：新东方英语词汇速记大全
相关例句：
Her pugnacious speech convinced her opponents that she was still a threat to them.
她那咄咄逼人的演说使得她的反对者相信她对他们依然是个威胁。
When he became a lawyer, he sprang to the defence of his clients with the same pugnacious attitude that has characterised his childhood.
他做了律师以后，以他小时候出了名的好斗态度积极替他的委托人辩护。
Nobody knows if the urbane Mr Jaitley, who leads the party in Parliament's upper house, or the pugnacious Sushma Swaraj, in the lower house, is really in charge.
没人知道彬彬有礼的上院领袖杰特雷和敢作敢为的下院首领斯瓦拉杰到底谁才是真正的领导人。
On the another hand, in the social consciousness, the flood strong impacted on the life style and consuetude of local people, from the live and work in peace and optimistic positive character to passive folkway of conservative and liking to flee from their homeland and pugnacious.
其次，在社会意识层面，水患深刻地影响了人们的生活方式和行为习惯，淮域居民从唐宋时期的安土重迁、乐观向上的积极性格变成为安贫保守、逃荒喜迁、尚武好斗的消极民风。
Afterwards I sought the advice of a pugnacious colleague.
随后我到一个爱吵架的同事那里寻求建议。
Because I'm relying on DbUnit to put the database into a known state before any tests are run, I can assume that the word, pugnacious, is valid with its part of speech set to Adjective.
因为我用DbUnit让数据库在每次测试之前处于一种已知状态，因此可以假定单词pugnacious是有效的，且其词性设置为Adjective。