Of course every language will have its own idea of a normal progression of letters (have you heard the story of the Polish man who was asked by an optician if he could read the third line and said read it? I know him!?).
But apart from words obviously pinched from other languages, like eschscholzia (called after Johann Friedrich von Eschscholz, a Russian citizen described in Wikipedia as Baltic German) and syzygy (which is Greek), you can find some odd tangles of letters in quite ordinary words that have been English for a long time.
So: what English word contains the consecutive letters wkw?
They're easy, aren't they? Well, they are if you know the answers, anyway - and you will if you look at the end of this post.*
All these particular peculiarities happen to be caused by two words having been joined together to make one, though it's not always obvious this had happened: in the word answer, for instance, the coming together of the prefix and- meaning against, or in reply, and some word like swarâ, meaning affirmation or swearing, happened a very long time ago - before the Old English word form of answer, andswaru, came into being.
I rather like the knobbliness these odd words give to English. I think it makes my native language just eccentric enough to be interesting.
And if that tells us anything about the English character, then that's interesting, too.
Word To Use Today: one that's slightly knobbly, perhaps.
*There are probably other answers to these, but mine are awkward, answer, worthwhile, loincloth, and sandwich and clergyman. Extra points if you can use all of them in a single sentence.