Modifiers matching gas:

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

Simple categories matching aggressive:

• fish,
• reagent,
• animal,
• dog,
• pest,
• ant,
• pet,
• solvent,
• bird,
• neoplasm,
• activity,
• game,
• sport,
• predator,
• beast,
• agent,
• gas,
• interaction,
• medium,
• bass,
• care,
• invertebrate,
• chemical,
• behaviour,
• solution,
• fluid,
• placental,
• prey,
• grass,
• environment,
• therapy,
• behavior,
• acid,
• lymphoma,
• monster,
• enzyme,
• offense,
• tree,
• nature,
• encounter,
• event,
• cargo,
• option,
• cichlid,
• action,
• native,
• creature,
• treatment,
• change,
• compound,
• emotion,
• track,
• illness,
• socialization,
• motive,
• cleaners,
• outlet,
• equine,
• material,
• tetra,
• tumor,
• vegetable,
• component,
• interference,
• athletics,
• disease,
• condition,
• insect,
• act,
• ion,
• liquid,
• feeder,
• form,
• offence,
• malignancy,
• cancer,
• conflict,
• shrub,
• plant,
• intervention,
• measure,
• crime,
• lesion,
• substance,