Vil, let's move forwards in time a little. Imagine a member search for 'unravel' in a few years' time; what will they see? A question, a reply and some further information on the word, which may well fill some gaps in their knowledge. Most native speakers don't know the word 'ravel', and it clearly caused the dictionary writers some bother. Like 'ungainly' it is far better known in its negative form, the same way few know that 'rather' is a comparative. It adds some interesting details to the picture painted in your original post.
Oh, and a somewhat ill-natured reply from you.
Please remember that a forum is asynchronous, hence communicating at one remove, and that sometimes there may be a mismatch between the perceptions of the request and the reply. Is this sneering the way you would reply in a conversation with someone? Try looking at this page the way someone might when they have no idea who you and I are.
A forum not only serves to try to help, answer and discuss the original poster's questions, but also forms a knowledge base that others can search; there are five-year-old posts here that are still getting read and old threads bubble up again as people dig them out and rekindle the discussion.
What will they make of your response above?
Here's a thread from 2003 touching on the word:
http://www.usingenglish.com/forum/as...ontranyms.html
People will come here and search for 'ravel' at some stage, and they will read your charmless words. I do hope you're feeling good about your post, because I am not. And not for the first time.