adj. Having no parallel; without equal; lacking anything similar or worthy of comparison.
the GNU version of the Collaborative International Dictionary of English
adj. Having no parallel, or equal; unequaled; unmatched.
The Century Dictionary and Cyclopedia
Having no parallel or equal; unequaled; unmatched.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. radically distinctive and without equal
Word Usage
"Foreigners have always criticized the American for his pursuit of the almighty dollar, but have seldom gone on to note that he has in unparalleled degree returned the fruits of his labors to society."