spelunker

noun 0.804

speleology

noun 0.770

caving

noun 0.752

potholing

noun 0.628

caver

noun 0.615

cavern

noun 0.604

speleothem

noun 0.603

cave

noun 0.599

cave dweller

noun 0.597

urban exploration

noun 0.595

rock climbing

noun 0.585

canyoneering

noun 0.580

exploring

noun 0.574

canyoning

noun 0.571

bouldering

noun 0.563

scuba diving

noun 0.558

burrowing

noun 0.553

rockhounding

noun 0.552

diving

noun 0.546

climbing

noun 0.541

geocaching

noun 0.538

mountain climbing

noun 0.538

sleuthing

noun 0.535

cave in

noun 0.532

tunneling

noun 0.532

exploration

noun 0.530

explore

noun 0.528

crawl space

noun 0.526

free climbing

noun 0.525

skulking

noun 0.524

adventuring

noun 0.524

technical climbing

noun 0.520

mountaineering

noun 0.519

digging

noun 0.518

exploratory

noun 0.516

excavation

noun 0.514

hiking

noun 0.514

unearthing

noun 0.512

skydiving

noun 0.511

scuba

noun 0.509

troglodyte

noun 0.508

spooking

noun 0.508

plunging

noun 0.507

crawling

noun 0.506

crawl

noun 0.504

cavewoman

noun 0.504

ghosthunting

noun 0.503

snooping

noun 0.502

spudding

noun 0.502

mushrooming

noun 0.502