private investigator

noun 0.851

detective

noun 0.721

investigator

noun 0.687

gumshoe

noun 0.674

sleuth

noun 0.642

spy

noun 0.606

inspector

noun 0.590

detective work

noun 0.588

spy ring

noun 0.580

investigative journalist

noun 0.579

home inspector

noun 0.574

secret agent

noun 0.566

bounty hunter

noun 0.555

peeper

noun 0.553

peephole

noun 0.550

vigilante

noun 0.539

snooper

noun 0.539

eyewitness

noun 0.532

mystery shopper

noun 0.530

spyhole

noun 0.529

searcher

noun 0.529

inspector general

noun 0.527

sleuthing

noun 0.526

eye

noun 0.524

paparazzi

noun 0.524

eagle eye

noun 0.523

paparazzo

noun 0.522

plainclothesman

noun 0.522

policeman

noun 0.521

eye doctor

noun 0.521

watchman

noun 0.515

psychic

noun 0.515

hitman

noun 0.514

eavesdropper

noun 0.512

examiner

noun 0.510

looker

noun 0.509

spyglass

noun 0.508

intelligence office

noun 0.508

peeping

noun 0.507

lookout

noun 0.506

prospector

noun 0.506

watchdog

noun 0.505

police officer

noun 0.504

snooping

noun 0.504

sneak thief

noun 0.501