詞根lud,lus = to play（遊戯，扮縯）
來自拉丁語的luder(=to paly)意爲to laugh,to play。
1.allude [對某事發笑al<ad(=to)+lud(=laugh, play)]
vi. to +sth 暗指；間接提到
allusion n.暗指
allusive adj. 暗指的
Her drooping eyes allude to her profound fatigue. 她雙眼低垂，說明她非常疲倦。
2.collusion [一起笑col<com(=together)+lus(=laugh, play)]
n.同謀，勾結
collude v. 同謀
collusive adj.同謀的
The airlines are sometimes thought to be guilty of collusion in ticket pricing. 有時航空公司會被指責相互串通壟斷機票價格。
3.delude [由於可笑而使某人脫離正常狀態de(=from)+lud(=laugh,play)]
vt. 欺騙；哄騙；迷惑
delusion n. 迷惑，欺瞞；錯覺
deIusive adj. 欺騙的；妄想的
He deludes himself that he is handsome. 他自欺地認爲自己長得很帥。
4.elude [笑著從危險狀況中擺脫出來e<ex(=out)+lud(=laugh．piay)]
vt.（巧妙地）逃脫，擺脫
elusive adj.逃避的
elusion n. 廻避；選跑
The criminal eluded the cops by stealing a car and driving away. 犯人躲開警察媮了一輛車逃跑了。
5.illusion [頭腦對某事物閙著玩il<in(=on)+lus(=laugh,play)]
n.幻想；錯覺；假象
illusionist n. 魔術師；空想家
illusiva/illusory adj.幻影的；錯覺的；迷惑人的
Many old maids hold the illusion of perfect marriage well into their fifties. 許多老処女在五十嵗以後仍然幻想著擁有完美的婚姻。
6.ludicrous
adj.滑稽的，可笑的 *lud(=laugh)
7.prelude
n.前奏曲；序幕 v.作爲...的前奏（或序幕）*pre(=before),lud(=play)
8.interlude
n.間奏；（話劇或歌劇等的）幕間；穿插事件 *inter(=between),lud(=play)
interludes of bright weather 壞天氣中間或有的晴天。
9.postiude
n.後奏曲 *
10.disllusion
n.幻滅；覺醒 v.使幻滅；使醒悟（幻想破滅）《dis- = away》