nitrous oxide

noun 0.776

nitrous

noun 0.684

gas and air

noun 0.679

nitrous air

noun 0.674

laughing

noun 0.646

gas

noun 0.625

natural gas

noun 0.624

laugh

noun 0.615

oxygen gas

noun 0.607

town gas

noun 0.605

gassing

noun 0.591

laugher

noun 0.590

gas main

noun 0.586

flatulence

noun 0.575

marsh gas

noun 0.575

tear gas

noun 0.574

nitric oxide

noun 0.570

nitrogen

noun 0.569

carbonic acid gas

noun 0.569

bottled gas

noun 0.561

nitrogen narcosis

noun 0.560

giggle

noun 0.559

gas hydrate

noun 0.558

liquid nitrogen

noun 0.557

nitro

noun 0.556

gas truck

noun 0.556

ideal gas

noun 0.555

nitrous acid

noun 0.553

noble gas

noun 0.552

fart

noun 0.552

helium

noun 0.551

illuminating gas

noun 0.549

liquid air

noun 0.547

greenhouse gas

noun 0.544

gas jet

noun 0.543

dinitrogen tetroxide

noun 0.543

potassium nitrate

noun 0.542

gasoline

noun 0.542

inert gas

noun 0.541

coal gas

noun 0.541

carbon dioxide

noun 0.540

giggler

noun 0.538

laughter

noun 0.538

water gas

noun 0.537

methane

noun 0.537

amyl nitrate

noun 0.536

flatus

noun 0.536

nitrox

noun 0.536

sulfur hexafluoride

noun 0.534

gassiness

noun 0.533

inhalant

noun 0.533

whoopee cushion

noun 0.531

nitric acid

noun 0.529

compressed air

noun 0.528

nitrogen monoxide

noun 0.525

nitrogen oxide

noun 0.524

dinitrogen pentoxide

noun 0.524

amyl nitrite

noun 0.524

guffaw

noun 0.523

chuckle

noun 0.518

hydrogen sulfide

noun 0.517

oil gas

noun 0.517

funny

noun 0.516

mustard gas

noun 0.514

cocaine

noun 0.513

nitrogen tetroxide

noun 0.512

guffawing

noun 0.512

dinitrogen

noun 0.512

gas mask

noun 0.509

nitric

noun 0.507

anesthetic

noun 0.506

chuckling

noun 0.505

pneumatic

noun 0.505

sodium bicarbonate

noun 0.505

gasser

noun 0.504

nitroglycerine

noun 0.503

baking soda

noun 0.502

nitrate of soda

noun 0.502

hydrogen

noun 0.501

inflammable air

noun 0.501