Great. What about UN as a prefix to verbs that don’t exist in the positive?
Undulate: Dulate. Not even a guess.
Unearth: Reearth? To earth does exist, much to my surprise.
* cover the root and lower stem of a plant with heaped-up earth.
English has un nouns as well.
Underwear: Derwear? Overwear, that’s a stretch. Outerwear? If so, why isn’t it Innerwear?
Uncuous: Cuous. Nope.
And then UN words that mean the same as their negative counterpart?
Unravel: Ravel? It means the same thing.
* untangle or unravel something
It’s a good thing English is my first language.
©2014 Sandra R. Davidson