I think you can find a lot of 1 word dictionary words are not all worth $1k+. Just look at the dictionary words being sold on NamePros. Short nouns and verbs are the most valuable. But lengthy adjectives, could still be available for registration (or should be).
Many dictionary keywords have no practical use, because they are obscure, or seldom used. Or adverbs etc that don't make sense as stand-alone domains.
So the answer is clearly no.