1) Alone 2) Exceptional 3) Extraordinary 4) First-time 5) Having no parallel, or equal 6) Incomparable 7) Not paralleled 8) Peerless 9) Record 10) Uncomparable 11) Unequaled 12) Unequaled or unmatched 13) Unequalled 14) Unique 15) Unmatched 16) Wihtout equal 1) Excellent 2) Extraordinary 3) Ideal 4) Incomparable 5) Lone 6) Sole 7) Uncomparable 8) Unequaled 9) Unequalled 10) Unexampled 11) Unique 
• (a.) Having no parallel, or equal; unequaled; unmatched.
not paralleled; unequaled or unmatched; peerless; unprecedented: unparalleled athletic ability.
[SAT terms] radically distinctive and without equal