subfloor

noun 0.581

undersurface

noun 0.566

ceiling

noun 0.553

roof

noun 0.547

underside

noun 0.538

dropped ceiling

noun 0.537

underfloor

noun 0.535

pelmet

noun 0.534

roof assembly

noun 0.533

siding

noun 0.533

attic

noun 0.517

underlay

noun 0.515

souterrain

noun 0.514

strop

noun 0.513

soot

noun 0.512

cornicing

noun 0.510

plafond

noun 0.509

roofing

noun 0.509

socle

noun 0.508

toit

noun 0.508

underneath

noun 0.505

floorboard

noun 0.505

roofline

noun 0.504

soft thing

noun 0.504

sheet rock

noun 0.503

footwell

noun 0.501