unknown

adj 0.686

unidentified

adj 0.685

undiscovered

adj 0.659

unknowing

adj 0.651

incog

adj 0.650

unidentifiable

adj 0.646

incognito

adj 0.645

unbeknown

adj 0.643

unascertained

adj 0.642

undisclosed

adj 0.639

unknowable

adj 0.639

unnamed

adj 0.626

unfamiliar

adj 0.616

unrecognized

adj 0.614

unobserved

adj 0.614

as yet unknown

adj 0.613

imponderable

adj 0.612

incertain

adj 0.609

unrevealed

adj 0.607

mysterious

adj 0.606

undetermined

adj 0.604

enigmatical

adj 0.602

unguessable

adj 0.602

indeterminate

adj 0.601

undiagnosed

adj 0.601

unspecified

adj 0.599

unseen

adj 0.598

invisible

adj 0.597

obscure

adj 0.595

nonidentifiable

adj 0.595

indeterminant

adj 0.592

unannounced

adj 0.591

undeclared

adj 0.590

unclarified

adj 0.589

enigmatic

adj 0.589

undiscoverable

adj 0.589

unsuspected

adj 0.588

indemonstrable

adj 0.587

occult

adj 0.586

undiagnostic

adj 0.585

unsolved

adj 0.584

unexplained

adj 0.583

unexplored

adj 0.583

undescribed

adj 0.579

unapparent

adj 0.579

indefinable

adj 0.578

little-known

adj 0.577

unascertainable

adj 0.577

unsure

adj 0.577

uncertain

adj 0.576

hidden

adj 0.576

uncharted

adj 0.575

undefinable

adj 0.575

unmysterious

adj 0.574

inscrutable

adj 0.573

ambiguous

adj 0.572

unmentioned

adj 0.571

indeterminable

adj 0.570

unclear

adj 0.570

unspoken

adj 0.570

unclassified

adj 0.569

undetected

adj 0.567

unstated

adj 0.567

indefinite

adj 0.566

unexposed

adj 0.565

unaccounted

adj 0.564

nameless

adj 0.563

undiscussed

adj 0.562

undivulged

adj 0.562

unheard

adj 0.561

unexplicated

adj 0.561

unlisted

adj 0.560

unrecognizable

adj 0.560

undocumented

adj 0.559

unreported

adj 0.559

unresolved

adj 0.559

incomputable

adj 0.558

unfathomed

adj 0.558

uninvestigated

adj 0.557

unsymbolized

adj 0.557

unfound

adj 0.556

unascribed

adj 0.556

undefined

adj 0.556

indiscernible

adj 0.555

anonymous

adj 0.555

unaware

adj 0.555

unacknowledged

adj 0.553

nonobvious

adj 0.553

unmanifested

adj 0.553

untitled

adj 0.552

inconspicuous

adj 0.552

unhidden

adj 0.551

unrecorded

adj 0.551

implicit

adj 0.551

unaccounted-for

adj 0.551

unsaid

adj 0.550

undecipherable

adj 0.549

underidentified

adj 0.549

cryptogenic

adj 0.547

uncategorized

adj 0.547