| Gas |
| Sky |
| C4H10O |
| Cosmos |
| Solvent |
| The sky |
| Airwaves |
| Rare air |
| Empyrean |
| Thin air |
| Heavens! |
| Light gas |
| Clear sky |
| BBC realm |
| Upper air |
| Upper sky |
| It's a gas |
| Lab liquid |
| Old number |
| Passé gas |
| Anesthesia |
| Cyberspace |
| Anesthetic |
| Heady stuff |
| Ethyl oxide |
| Outer space |
| Upper space |
| The heavens |
| Anaesthetic |
| Air up there |
| Old knockout |
| Rarefied air |
| Knockout gas |
| Dentist's gas |
| Dioxane, e.g. |
| Upper reaches |
| Early number? |
| An anesthetic |
| Upper regions |
| Common solvent |
| Old anesthetic |
| Air, to a poet |
| Former number? |
| Knockout stuff |
| Lead-in to net |
| The clear sky. |
| Old sleep aid? |
| Chloroform kin |
| Clear blue sky |
| Heavenly space |
| Anesthetic gas |
| Old anaesthetic |
| Air, poetically |
| Old surgery aid |
| Old under-taker |
| Space, to poets |
| Who "In the ___ |
| Anaesthetic gas |
| It's a knockout |
| Volatile solvent |
| A real knockout? |
| Colorless liquid |
| Flammable liquid |
| Knockout number? |
| Laughing-gas kin |
| Old knockout gas |
| Space out yonder |
| What a knockout! |
| Aromatic solvent |
| Compound number? |
| Early anesthesia |
| Wide blue yonder |
| Upper atmosphere |
| Early anesthetic |
| Wild blue yonder |
| Flammable solvent |
| Anesthetic liquid |
| Old sleeping aid? |
| Old-time knockout |
| Passé anesthetic |
| Potent anesthetic |
| Space, poetically |
| A great composer? |
| Early surgery aid |
| Kin of chloroform |
| Old sleep inducer |
| Early anaesthetic |
| Chloroform cousin |
| Anesthesia of old |
| Former anesthetic |
| Anesthetic of old |
| Bygone anesthetic |
| Antiknock additive |
| Old knockout cause |
| Old knockout fumes |
| Old numbing liquid |
| It can put you out |
| It puts people out |
| Old knockout agent |
| Pre-Novocain stuff |
| Onetime anesthetic |
| Certain anesthetic |
| Astronaut's milieu |
| Anesthetic of yore |
| Book of Mormon book |
| Chloroform's cousin |
| Chloroform relative |
| Knock-out gas, once |
| Knockout gas of old |
| Old hospital supply |
| Old pre-op inhalant |
| One-time anesthetic |
| Outmoded anesthetic |
| The far-blue yonder |
| Welsh alt-rock band |
| Clear sky, to poets |
| Outdated anesthetic |
| Heavens, poetically |
| Obsolete anesthetic |
| It'll knock you out |
| Old-time anesthetic |
| It can knock you out |
| Airwaves, informally |
| Number used no more? |
| Old dentist's supply |
| Old numbing compound |
| Anesthetic, formerly |
| Cousin of chloroform |
| Flammable anesthetic |
| Novocain predecessor |
| The wide blue yonder |
| Procaine predecessor |
| It's a real knockout |
| The wild blue yonder |
| Old-style anesthetic |
| Erstwhile anesthetic |
| Antiquated anesthetic |
| Clear sky, poetically |
| Knockout choice, once |
| Old-time knockout gas |
| Outer region of space |
| Pleasant-smelling gas |
| Upper air, poetically |
| Upper places in space |
| Chloroform substitute |
| Out-of-use anesthetic |
| Air beyond the clouds |
| Pre-op inhalant, once |
| Upper region of space |
| Dentist's supply, once |
| It could knock you out |
| Number no longer used? |
| It'll put you to sleep |
| Upper reaches of space |
| Outer regions of space |
| Dr. Morton's anesthetic |
| Fifth classical element |
| It can knock people out |
| Region beyond the ozone |
| Upper regions of space. |
| Once-popular anesthetic |
| Beyond the stratosphere. |
| Chloroform's predecessor |
| Dental anesthetic of old |
| It will put you to sleep |
| Pre-Novocain application |
| Surgeon's supply of yore |
| This could put you under |
| Highly flammable solvent |
| Old-fashioned anesthetic |
| Air or heavens, to a poet |
| Inhaled anesthetic of old |
| Nitrous oxide predecessor |
| Onetime dental anesthetic |
| Preparation for drilling? |
| Standard anesthetic, once |
| Clear night sky, in poetry |
| One on it may be out of it |
| One-time labratory solvent |
| Aristotle's "fifth element |
| Old hospital administration |
| Preoperative delivery, once |
| Solvent for resins and fats |
| Inhalation anesthetic, once |
| Fifth element, per Aristotle |
| Inhalation anesthetic of old |
| Number that's no longer used |
| It put people to sleep, once |
| Old operating-room substance |
| Preoperative delivery of old |
| Preoperative anesthetic of old |
| Operating room substance, once |
| Inhalant anesthetic of the past |
| Operating room substance of old |
| Surgeon's supply in the old days |
| Air beyond the clouds, poetically |
| Dimethyl ___ (aerosol propellant) |
| Solvent, once used as anaesthetic |
| Word from the Latin for "pure air |
| Upper regions of space, poetically |
| Colourless liquid used as a solvent |
| Upper regions of space, figuratively |
| Discovery of a Spanish chemist in 1275 |
| Part of the gasoline additive M.T.B.E. |
| There was a time it could knock you out |
| Anesthetic largely replaced by Halothane |
| Composition of outer space, in old belief |
| Dr. Larch's drug in "The Cider House Rules |
| Aromatic liquid formerly used as an anesthetic |
| Highly flammable liquid once used as an anaesthetic |
| Number that might be used when counting backward from 100? |
| Volatile organic liquid once used as a general anaesthetic |
| Old-timey anesthetic [need a holiday gift? avxwords.com annual subscriptions are just $15] |