under cover

adj 0.938

covert

adj 0.795

underground

adj 0.716

clandestine

adj 0.715

incognito

adj 0.706

disguised

adj 0.683

sub rosa

adj 0.681

plainclothes

adj 0.681

under the counter

adj 0.673

underhand

adj 0.669

cloaked

adj 0.669

uncovered

adj 0.669

hidden

adj 0.667

underhanded

adj 0.663

unhidden

adj 0.661

surreptitious

adj 0.654

stealth

adj 0.648

cover

adj 0.646

undisclosed

adj 0.644

underneath

adj 0.642

hidden in plain sight

adj 0.638

secret

adj 0.637

camouflaged

adj 0.631

concealable

adj 0.630

covered

adj 0.629

occult

adj 0.622

unexposed

adj 0.619

hided

adj 0.618

unmasked

adj 0.613

closeted

adj 0.612

unseen

adj 0.612

undetected

adj 0.612

secretive

adj 0.611

top secret

adj 0.609

unconcealed

adj 0.609

underlying

adj 0.604

sneaking

adj 0.603

sneak

adj 0.602

unsuspected

adj 0.601

uncloaked

adj 0.601

unadvertised

adj 0.600

unrevealed

adj 0.599

invisible

adj 0.599

sneaky

adj 0.598

undercut

adj 0.598

cloak-and-dagger

adj 0.597

veiled

adj 0.596

hush-hush

adj 0.596

unpublicized

adj 0.595

undersea

adj 0.594

top-secret

adj 0.591

subterraneous

adj 0.590

hideaway

adj 0.590

undiscovered

adj 0.590

masked

adj 0.590

undocumented

adj 0.589

submerged

adj 0.589

submarine

adj 0.589

undertail

adj 0.588

occulted

adj 0.588

unconcealing

adj 0.587

stealthy

adj 0.587

under

adj 0.585

incog

adj 0.585

underwater

adj 0.584

unrevealing

adj 0.584

subterranean

adj 0.583

unveiled

adj 0.582

subconscious

adj 0.581

behind the scenes

adj 0.581

hugger-mugger

adj 0.580

underly

adj 0.579

detective

adj 0.577

unannounced

adj 0.577

countersubversive

adj 0.576

overt

adj 0.574

unlisted

adj 0.570

cut-and-cover

adj 0.568

ill-disguised

adj 0.568

unreported

adj 0.566

subliminal

adj 0.566

subversive

adj 0.565

unconscious

adj 0.565

unobserved

adj 0.562

confidential

adj 0.561

classified

adj 0.561

exposed

adj 0.560

out of sight

adj 0.559

shrouded

adj 0.558

inconspicuous

adj 0.555

conspiratorial

adj 0.555

unearthed

adj 0.553

undisguised

adj 0.553

subsurface

adj 0.551

underline

adj 0.551

discreet

adj 0.551

unobtrusive

adj 0.550

unsuspecting

adj 0.549

unbeknown

adj 0.548

understated

adj 0.547