〖词语〗大 快 朵 颐
〖拼音〗dà kuài duǒ yí
〖出处〗《周易·颐》：“观我朵颐，凶。”

"大快朵颐"是指大饱口福，痛快淋漓地大吃一通。"颐"是脸颊，"朵"是动的意思，"朵颐"一词出于《易经》，指动腮帮进食。所以现在常用"大快朵颐"形容非常快活享受口福之乐。古人如果发现食物鲜美可口，大抵是鼓起腮颊大嚼特嚼，什么绅士风度淑女气质当是抛在脑后。朵是动词，颐是《易经》六十四卦的卦名之一，因为其卦象是艮上震下，正好是一个口的形状，所以后来就引申成“嘴”的意思。 朵颐就因此具有大吃的意思。这个词本身并不被收录在成语词典当中，应该只能归类为俗语。

出处 百度百科 http://baike.baidu.com/view/39699.htm

动感英语上的参考 http://studyenglish.blog.enorth.com.cn/article/295549.shtml:

With all due respect 恕我直言，我冒昧地说一句。 通常用于在对权威者的意见提出反对意见之前，以便使自己的发言显得不那么粗鲁无礼。

例子1: With all due respect,sir,that is not going to help anything.    先生请恕我冒昧，恐怕这么做根本就于事无补。

例子2 I understand what you're saying,but with all due respect I've been studying this topic for a lot longer than you have.   我明白你说的。可是恕我直言，我学这个比你时间长多了。

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Explanation from  http://encyclopedia.thefreedictionary.com/with+all+due+respect:

The phrase "with all due respect" is frequently used in English to soften constructive criticism that another person might otherwise find to be personally offensive. It assures the person being spoken to that no offense was intended, and that the speaker has no wish for this criticism to affect the nature of his relationship with the person being criticized.

Most often used preceding the subject of the criticism, it is somewhat less frequently used after the criticism has been given-- sometimes in a moment of panic about having just said that, or in response to the immediate reaction of the person being spoken to.

"With all due respect" can be used both sincerely and facetiously; most of the time the person being spoken to can determine that by the person's tone, much as with many phrases. When used sincerely, it is usually between two people who genuinely respect or love each other, or by someone who doesn't really know the other person all that well and doesn't want to get off on the wrong foot.

When used facetiously, the speaker's motivation could be to escape the consequences that would otherwise ensue from having so plainly spoken his or her mind; in this manner it is quite often directed to someone who has the ability to punish the speaker for saying what they did (such as a boss or parent), or to someone the speaker really doesn't like. In any event, the phrase tends to have the opposite effect of what's really intended-- it for the most part puts people right on the defensive-- and unless used in a genuine and conciliatory tone, most people can see right through it.