名詞 rant:

1. a loud bombastic declamation expressed with strong emotion
   同義詞：harangue, ranting
2. pompous or pretentious talk or writing
   同義詞：bombast, fustian, claptrap, blah

動詞 rant:

1. talk in a noisy, excited, or declamatory manner
   同義詞：mouth off, jabber, spout, rabbit on, rave

1. This actor rants his lines.
   這演員背臺詞拿腔拿調。
2. You can rant and rave at the fine, but you'll still have to pay it.
   你鬧也好，罵也好，罰金還是得交。
3. He ranted (on) at me about my mistakes.
   他大聲數落我。

rant

v.（動詞）
rant.ed,rant.ing,rants
v.intr.（不及物動詞）
To speak or declaim in a violent, loud, or vehement manner; rave.
大叫大嚷，夸夸其談：用粗野的，極大的聲音或粗野的態(tài)度說話或下結論；大聲責罵
v.tr.（及物動詞）
To utter with violence or extravagance:
大聲說出：用激情或夸張表達觀點：
例句：
a dictator who ranted his vitriol onto a captive audience.
一個向馴服的聽眾們大聲兜售尖刻觀點的獨裁者

n.（名詞）
Violent, loud, or extravagant speech.See Synonyms at bombast
粗野的話，喧鬧的話，夸大的話參見 bombast
Chiefly British Wild or uproarious merriment.
【多用于英國】 狂歡：粗野或喧鬧的尋歡作樂

來源：
Probably from obsolete Dutch ranten
可能源自 已廢荷蘭語 ranten

【引伸】
rant.er
n.（名詞）