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noun 0.722

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noun 0.670

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noun 0.645

singular

noun 0.593

unique

noun 0.588

single

noun 0.586

one-hit wonder

noun 0.583

pickoff

noun 0.577

one-on-one

noun 0.565

ounce

noun 0.563

unicum

noun 0.562

odd

noun 0.559

occasion

noun 0.558

offing

noun 0.556

odd lot

noun 0.555

one-stop

noun 0.554

onde

noun 0.553

offcut

noun 0.551

odd one out

noun 0.551

one in a million

noun 0.550

off chance

noun 0.549

long off

noun 0.547

onus

noun 0.546

one-to-one

noun 0.542

the one

noun 0.538

one-way ticket

noun 0.535

unusual

noun 0.533

day off

noun 0.533

one-trick

noun 0.532

singleton

noun 0.529

one up

noun 0.528

singleton set

noun 0.527

limited edition

noun 0.526

one-step

noun 0.525

individual

noun 0.522

break-off

noun 0.522

special

noun 0.519

odd function

noun 0.519

oni

noun 0.519

special case

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oddity

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rare

noun 0.516

onesie

noun 0.515

write-off

noun 0.515

exceptional

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oner

noun 0.514

hapax legomenon

noun 0.513

day trip

noun 0.512

only

noun 0.512

overnight

noun 0.511

off day

noun 0.510

oddball

noun 0.510

nonregular

noun 0.506

spur of the moment

noun 0.505

singularity

noun 0.505

great one

noun 0.504

item

noun 0.503

occasional table

noun 0.503

onesies

noun 0.503

ongoing

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mono

noun 0.501

unicity

noun 0.500