unprecedented

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unparalleled

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unequaled

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unexcelled

adj 0.796

unequalled

adj 0.779

unmatched

adj 0.771

unrivaled

adj 0.739

unrivalled

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unsurpassed

adj 0.721

matchless

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unparallel

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unmatchable

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exceptional

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unusual

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unwonted

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unencountered

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unique

adj 0.658

extraordinary

adj 0.657

peerless

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unexceptional

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uncommon

adj 0.652

incomparable

adj 0.651

undescribed

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undreamt

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nonpareil

adj 0.643

unattempted

adj 0.634

unaccustomed

adj 0.632

inimitable

adj 0.629

uncharacteristic

adj 0.626

imitable

adj 0.622

unheard

adj 0.622

extraordinaire

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unclassed

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unimaginable

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unforeseen

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untried

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unlooked for

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unworldly

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unpredicted

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unheralded

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unhackneyed

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uncustomary

adj 0.604

unexceptionable

adj 0.602

uncaused

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unanticipated

adj 0.595

unexperienced

adj 0.595

unexpected

adj 0.594

untrod

adj 0.593

par excellence

adj 0.592

untrodden

adj 0.591

unearthly

adj 0.591

uncharted

adj 0.591

unseen

adj 0.589

remarkable

adj 0.589

unhoped

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exemplary

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unpracticed

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unexplicated

adj 0.585

unhistoric

adj 0.585

unrecognized

adj 0.584

unattested

adj 0.584

nonordinary

adj 0.584

unexplored

adj 0.583

unmapped

adj 0.583

unaccounted

adj 0.582

uncaught

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unalike

adj 0.580

unfrequented

adj 0.580

unreal

adj 0.578

unrepeatable

adj 0.578

untypical

adj 0.577

unlike

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unexplained

adj 0.575

second to none

adj 0.575

unfamiliar

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untold

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untraveled

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otherworldly

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unnamed

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unforgettable

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unexploited

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rare

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unbelievable

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unfound

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undefined

adj 0.565

untasted

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unversed

adj 0.565

unal

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unthought

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unthinkable

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imaginable

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unchallenged

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unrecorded

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unfathomed

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unremarkable

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uncanny

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unconceived

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unnameable

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unsymbolized

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uncoined

adj 0.559