clandestine

adj 0.793

stealthy

adj 0.745

sneaky

adj 0.744

furtive

adj 0.741

covert

adj 0.736

secretive

adj 0.716

stealth

adj 0.710

sneaking

adj 0.708

underhanded

adj 0.699

sneak

adj 0.685

undercover

adj 0.654

discreet

adj 0.653

sub rosa

adj 0.650

secret

adj 0.645

incognito

adj 0.630

conspiratorial

adj 0.629

underhand

adj 0.625

hush-hush

adj 0.621

devious

adj 0.621

occult

adj 0.620

hidden

adj 0.610

unsuspected

adj 0.603

subliminal

adj 0.598

concealable

adj 0.598

undisclosed

adj 0.598

insidious

adj 0.597

confidential

adj 0.596

steganographic

adj 0.596

sly

adj 0.596

duplicitous

adj 0.596

cloak-and-dagger

adj 0.594

hugger-mugger

adj 0.592

top secret

adj 0.590

unobtrusive

adj 0.589

subtle

adj 0.587

deceptive

adj 0.587

top-secret

adj 0.586

tacit

adj 0.585

subversive

adj 0.584

under cover

adj 0.583

cloaked

adj 0.583

evasive

adj 0.583

conniving

adj 0.580

inconspicuous

adj 0.579

illicit

adj 0.578

disguised

adj 0.577

unpublicized

adj 0.575

cryptic

adj 0.572

deceitful

adj 0.567

unsuspecting

adj 0.565

inadvertent

adj 0.564

suspicious

adj 0.563

indiscreet

adj 0.563

cunning

adj 0.563

cagey

adj 0.561

occulted

adj 0.560

unadvertised

adj 0.558

subterraneous

adj 0.558

unhidden

adj 0.557

secluded

adj 0.553

unannounced

adj 0.553

subconscious

adj 0.553

reclusive

adj 0.552

thievish

adj 0.552

recondite

adj 0.551

shadowy

adj 0.551

seclusive

adj 0.549

hidden in plain sight

adj 0.549

mysterious

adj 0.547

camouflaged

adj 0.545

elusive

adj 0.545

undetected

adj 0.545

crafty

adj 0.544

unsuspicious

adj 0.543

complicitous

adj 0.542

obscure

adj 0.540

unperceived

adj 0.540

unauthorized

adj 0.540

unseen

adj 0.540

unsubtle

adj 0.540

treacherous

adj 0.538

guileful

adj 0.538

backstairs

adj 0.536

unostentatious

adj 0.536

unobserved

adj 0.535

sotto voce

adj 0.535

collusive

adj 0.534

undocumented

adj 0.531

unconcealed

adj 0.531

unwitting

adj 0.528

nonpublic

adj 0.528

voyeuristic

adj 0.528

invisible

adj 0.527

unrevealing

adj 0.527

hided

adj 0.526

thieving

adj 0.526

hideaway

adj 0.526

circumspect

adj 0.525

rogue

adj 0.524

subterranean

adj 0.523