talk, speak:
词根:loqu, locut = to say, to speak 说话
   来源于拉丁语 loqui (v.) 说话 意为to say,to speak 说话。词根locu 为 locut 的变体,有异形同义词根: leg,ect 说。同义词根有来自拉丁语的dic/dict,fa/fam/fess,nounc/nunci,or,parl 和来自希腊语的phras,pha/phe/phu等。
同源词:
1. obloquy(和某人对着说 ob(=against) + loqu(=say))
   n.谩骂;强烈指责;耻辱
   His reputation was damaged by the obloquy heaped upon him in the press. 舆论对他的大肆指责有损他的名声。
2. loquacious(多说的 loqu (=say))
   adj.话多的;健谈的
   loquacity n.多话,饶舌
   She's a loquacious old biddy,as old maids often are. 如同一般的老处女那样,她也是个饶舌的老太婆。
3. circumlocution  [circum(=around) 环,绕 + locut 说 + -ion 名词后缀]
   n.婉转;委婉的表达
4. colloquial  [co<com (=togehter) 一起,共同 +lloqu=  loqu 说话 + -ial 形容词后缀]
   adj.会话体的,口语体的
5. colloquialism  [co<com(=togehter)+ lloqu 说话 + -ial 后缀  + -ism (=speech) 后缀]
   n.口语体,会话体
6. colloquy
   n.谈话;讨论 *co<com(=togehter)
7. grandiloquent
   adj.夸张的;大言不惭的 *gran (=great)
   grandiloquent 说话夸张的人
   written in a grandiloquent style 用夸张的文笔写成
8. interlocutor
   n.对话者 *inter (=between)
9. locution
   n.语言风格;惯用语
10. ventriloquism
   n.腹语(术);口述 *ventri (=abdomen)