Modifiers matching gas:

• rare,
• lighter,
• aggressive,
• inert,
• technical,
• noble,
• relativistic,
• desirable,
• off,
• pure,
• combustible,
• organic,
• undesirable,
• out,
• refrigerant,
• obnoxious,
• poisonous,
• insoluble,
• impure,
• rarefied,
• model,
• toxic,
• refrigerated,
• industrial,
• soluble,
• flammable,
• cold,
• passive,
• explosive,
• reactive,
• light,
• heavier,
• basic,
• supportive,
• safe,
• diatomic,
• dry,
• oxidizable,
• supercritical,
• detrimental,
• buoyant,
• electropositive,
• ambient,
• deleterious,
• benign,
• indoor,
• conventional,
• medicinal,
• controlled,
• manufactured,
• strong,
• airborne,
• particular,
• invisible,
• sulfurous,
• expensive,
• miscellaneous,
• interfering,
• weak,
• working,
• permanent,
• monatomic,
• clean,
• damaging,
• moving,
• injurious,
• hydrophobic,
• carcinogenic,
• respiratory,
• liquefied,
• saturated,
• traditional,
• small,
• metabolic,
• single,
• unwanted,
• abundant,
• suitable,
• number,
• diamagnetic,
• acidic,
• medical,
• mental,
• radioactive,
• chemical,
• tenuous,
• ignitable,
• anthropogenic,
• ordinary,
• cryogenic,
• cheap,
• auxiliary,
• luminous,
• heated,
• biogenic,
• foreign,
• dense,
• warm,
• harmless,
• carbonaceous,
• dusty,
• unstable,
• paramagnetic,
• individual,
• frozen,
• dissolved,
• valuable,
• automotive,
• edible,
• fixed,
• available,
• ionic,
• inflammable,
• vesicant,
• dangerous,
• active,
• liquified,
• floating,
• major,
• supporting,
• popular,
• special,
• propellant,
• incoming,
• faster,
• nonflammable,
• base,
• hydrophilic,
• heavy,
• environmental,
• simple,
• surrounding,
• lightweight,
• absorptive,
• neutral,
• inorganic,
• familiar,
• hazardous,
• real,
• diffusing,
• under,
• fast,
• irritating,
• compressed,
• critical,
• mixed,
• noxious,
• innocuous,
• thin,
• unique,
• additional,
• nontoxic,
• complex,
• oxidative,
• hot,
• compressible,
• noncombustible,
• artificial,
• monoatomic,
• protective,
• essential,
• scientific,
• important,
• metal,
• deadly,
• warming,
• external,
• nonpolar,
• unsaturated,
• beneficial,
• conductive,
• polar,
• incombustible,
• vital,
• rich,
• convenient,
• acid,
• minor,
• dilute,
• malign,
• transparent,
• electronegative,
• relevant,
• secondary,
• suffocating,
• classical,
• mobile,
• inexpensive,
• malodorous,
• harmful,
• standard,
• identifiable,
• stable,
• commercial,
• useful,
• key,
• natural,
• extraneous,
• medium,
• divalent,
• corrosive,
• common,
• raw,
• atomic,
• alkaline,
• atmospheric,
• consumable,
• molecular,
• residual,
• synthetic,
• liquid,
• volatile,
• separate,
• elemental,
• starting,
• supplemental,

Simple categories matching undesirable:

• character,
• activity,
• behavior,
• mammal,
• bacteria,
• emotion,
• lipid,
• motive,
• metal,
• metabolite,
• artifact,
• alteration,
• surface,
• substance,
• trait,
• email,
• creature,
• contaminant,
• phase,
• product,
• event,
• material,
• behaviour,
• adaptation,
• bug,
• precipitate,
• rodent,
• animal,
• reaction,
• trouble,
• compound,
• vegetation,
• weather,
• website,
• odour,
• residue,
• content,
• plant,
• chemical,
• defect,
• occurrence,
• location,
• motion,
• pattern,
• thing,
• pathogen,
• algae,
• adduct,
• status,
• sector,
• fauna,
• practice,
• gas,
• pest,
• angle,
• passion,
• feature,
• fluid,
• matter,
• elements,
• scene,
• characteristic,
• filler,
• volatile,
• agent,
• property,
• action,
• facility,
• communication,
• code,
• constituent,
• change,
• growth,
• complication,
• microorganism,
• pollutant,
• item,
• nutrient,
• stabilizer,
• propensity,
• state,
• flora,
• flaw,
• bird,
• formation,
• result,
• cell,
• condition,
• phenomenon,
• incident,
• process,
• object,
• part,
• outcome,
• sediment,
• use,
• waste,
• particle,
• sensation,
• deposit,
• route,
• industry,
• microbe,
• symptom,
• component,
• ingredient,
• layer,
• solid,
• quality,
• cause,
• taste,
• software,
• noise,
• thought,
• vermin,
• mutation,
• attribute,
• situation,
• consequence,
• mail,
• lie,
• cation,
• light,
• area,
• zone,
• conduct,
• experience,
• mineral,
• organism,