形容詞 fortuitous:

1. having no cause or apparent cause
   同義詞：causeless, uncaused
2. occurring by happy chance

1. The quality or condition of being fortuitous.
   偶然性，偶然偶然發(fā)生的性質(zhì)或狀態(tài)
2. A series of fortuitous circumstances advanced her career.
   一系列的幸運事使她的事業(yè)一帆風(fēng)順。
3. In a other word, verb "be" is the most fortuitous verb of change.
   換句話說，動詞“be”是個變化最不規(guī)則的動詞。
4. Occurring by chance; fortuitous.
   僥幸的碰巧發(fā)生的，幸運的

for.tu.i.tous

adj.（形容詞）
Happening by accident or chance.See Synonyms at accidental
偶然發(fā)生的：因某種事件或機(jī)會而發(fā)生參見 accidental
Usage Problem
【用法疑難】
Happening by a fortunate accident or chance.
幸運地發(fā)生的：因某種幸運事件或機(jī)會而發(fā)生的
Lucky or fortunate.
幸運的，好運的

來源：
Latin fortuotus
拉丁語 fortuotus
from forte [by chance] [ablative of] fors [chance]
源自 forte [偶然的] [] fors的奪格 [機(jī)會]

【引伸】
fortu.itously
adv.（副詞）
fortu.itousness
n.（名詞）
In its best-established sense,fortuitous means .happening by accident or chance,. with no implication as to the desirability of the outcome:a fortuitous meeting may have either fortunate or unfortunate consequences. In this century, however, the word is often used with particular reference to happy accidents,as inThe company`s third-quarter profits were enhanced as the result of a fortuitous drop in the cost of RAM chips. This use may have arisenbecausefortuitous resembles both fortunate and felicitous; it is well established in the writing of reputable authors.More controversial is the use offortuitous to mean simply .lucky or fortunate,. as inHe came to the Giants in June as the result of a fortuitous trade that sent two minor-league players to the Reds` organization. This use dates back at least to the 920`s,when H.W. Fowler labeled it a malaproprism.It is still widely regarded as incorrect,and writers who are unwilling to risk censure are advised to avoid it.
從最公認(rèn)的意義上說，fortuitous 的意思是.偶然發(fā)生的.， 不暗示結(jié)果是否稱心：臨時會議 可以有好或壞的結(jié)果。 然而在本世紀(jì)這個詞常用于專指好的事件，如內(nèi)存條價格的意外下降導(dǎo)致了公司第三季度利潤的增加。 這種用法可能出現(xiàn)，因為fortuitous 類似于 fortunate 和 felicitous； 它用于有名望的作家的寫作中。更有爭論的用法是fortuitous 的含義為.幸運的或好運的.時， 如一次幸運的送兩名小社團(tuán)的運動員去紅色組織的交易使他在六月去了巨人國。 這種用法至少可追溯到20世紀(jì)20年代，當(dāng)時H.W.弗勞爾把它標(biāo)作一個可笑的用法錯誤?，F(xiàn)在這種用法仍被廣泛地認(rèn)為是錯誤的，建議不愿冒險受指責(zé)的作者避免使用