dun

noun 0.795

dunt

noun 0.710

unknown

noun 0.621

dunce

noun 0.618

doo

noun 0.609

dud

noun 0.597

unknowing

noun 0.579

doh

noun 0.576

dum dum

noun 0.573

unknowable

noun 0.573

dummy

noun 0.562

dumdum

noun 0.561

doubtful

noun 0.559

nevermind

noun 0.559

doot

noun 0.558

don

noun 0.557

dong

noun 0.554

darn

noun 0.551

unfamiliar

noun 0.549

doo-doo

noun 0.549

nothing

noun 0.548

donee

noun 0.547

nope

noun 0.544

know

noun 0.544

unsureness

noun 0.543

nun

noun 0.542

nobody

noun 0.542

dunging

noun 0.541

donk

noun 0.540

ignoramus

noun 0.539

none

noun 0.539

dung

noun 0.539

donkey

noun 0.538

inconnu

noun 0.537

donut

noun 0.537

ignorant

noun 0.534

what

noun 0.534

ditto

noun 0.534

dunder

noun 0.534

dune

noun 0.530

dook

noun 0.530

doubt

noun 0.530

dingus

noun 0.530

dunning

noun 0.528

unknowingness

noun 0.526

diddly

noun 0.525

whatnot

noun 0.525

din

noun 0.525

doozy

noun 0.523

dint

noun 0.523

unknot

noun 0.523

dodo

noun 0.523

indefinite

noun 0.523

undecided

noun 0.522

donjon

noun 0.521

noun

noun 0.520

undefinable

noun 0.518

doona

noun 0.517

nutso

noun 0.517

doughnut

noun 0.516

doubting

noun 0.516

dunlin

noun 0.516

wondering

noun 0.516

dorn

noun 0.515

something

noun 0.515

due

noun 0.515

dump

noun 0.514

no-no

noun 0.514

nonsense

noun 0.513

dunnock

noun 0.513

dude

noun 0.513

doof

noun 0.511

null

noun 0.511

dunam

noun 0.510

indeterminate

noun 0.510

dumbness

noun 0.509

donna

noun 0.509

diddle

noun 0.507

down

noun 0.507

yup

noun 0.506

indeterminable

noun 0.506

dan

noun 0.506

stupid

noun 0.506

dolt

noun 0.506

no-name

noun 0.505

uncertainty

noun 0.505

hun

noun 0.505

doum

noun 0.504

dang

noun 0.504

dah

noun 0.504

unknowability

noun 0.503

dunderhead

noun 0.503

doe

noun 0.502

dink

noun 0.502

cluelessness

noun 0.502

dough

noun 0.501

bun

noun 0.501

nowt

noun 0.501

duff

noun 0.500

dino

noun 0.500