振振有詞

to speak forcefully and with justice (idiom); to argue with the courage of one's convictions

to have; there is / (bound form) having; with; -ful; -ed; -al (as in 有意[you3 yi4] intentional)

to shake / to flap / to vibrate / to resonate / to rise up with spirit / to rouse oneself

word / statement / speech / lyrics / CL:組|组[zu3],個|个[ge4] / a form of lyric poetry, flourishing in the Song dynasty 宋朝|宋朝[Song4 chao2] / CL:首[shou3]