Modifiers matching fuel:

• thermal,
• liquid,
• convenient,
• solid,
• pure,
• consumable,
• dense,
• ignitable,
• regular,
• common,
• discrete,
• local,
• organic,
• rich,
• combustible,
• gaseous,
• commercial,
• ordinary,
• powdered,
• light,
• soluble,
• benign,
• traditional,
• unhealthy,
• abrasive,
• lighter,
• main,
• difficult,
• cleaner,
• key,
• conventional,
• direct,
• corrosive,
• indigenous,
• vaporizable,
• miscellaneous,
• separate,
• commonplace,
• small,
• inhomogeneous,
• sensitive,
• old,
• exotic,
• single,
• appropriate,
• granular,
• simple,
• destructive,
• sustainable,
• compressible,
• suitable,
• typical,
• primary,
• natural,
• possible,
• base,
• renewable,
• uniform,
• hard,
• propellant,
• medical,
• starting,
• down,
• inexpensive,
• compressed,
• new,
• dirtier,
• wet,
• supplementary,
• precious,
• specialized,
• homogeneous,
• alternative,
• smaller,
• unconventional,
• important,
• major,
• basic,
• useful,
• manufactured,
• toxic,
• fine,
• strategic,
• beneficial,
• macromolecular,
• efficient,
• up,
• thinner,
• fibrous,
• nonwoody,
• vegetative,
• artificial,
• industrial,
• particular,
• environmental,
• damaging,
• extra,
• auxiliary,
• several,
• residual,
• inflammable,
• explosive,
• cryogenic,
• flammable,
• taxable,
• special,
• usable,
• abundant,
• off,
• real,
• dirty,
• loose,
• essential,
• refined,
• competitive,
• advanced,
• supplemental,
• odd,
• supporting,
• valuable,
• nonrenewable,
• available,
• vehicular,
• clean,
• intermediate,
• nonpolar,
• individual,
• raw,
• foreign,
• oxidizable,
• future,
• finished,
• herbaceous,
• unwanted,
• friendly,
• dangerous,
• safe,
• residential,
• domestic,
• expensive,
• modern,
• biological,
• needed,
• automotive,
• chemical,
• diverse,
• cheap,
• dead,
• reactive,
• porous,
• volatile,
• standard,
• metabolic,
• fluid,
• hazardous,
• complex,
• carbonaceous,
• desirable,
• harmful,
• normal,
• indoor,
• physiological,
• particulate,
• dry,
• familiar,
• mundane,
• costly,
• heavier,
• nuclear,
• heavy,
• secondary,
• technical,
• innovative,
• actual,
• motor,
• unprocessed,
• synthetic,
• practical,

Simple categories matching heavy:

• metal,
• item,
• sauce,
• kerosene,
• decoration,
• user,
• equipment,
• coating,
• resistance,
• baggage,
• aerosol,
• armour,
• job,
• object,
• material,
• application,
• plastic,
• belt,
• hardware,
• mineral,
• group,
• tax,
• use,
• liquid,
• appliance,
• stone,
• vehicle,
• battle,
• furniture,
• atom,
• amalgam,
• solid,
• watercraft,
• portion,
• particle,
• body,
• endeavour,
• loaf,
• cable,
• solute,
• substrate,
• frame,
• usage,
• machine,
• cotton,
• woollen,
• paraphernalia,
• meal,
• embellishment,
• paper,
• track,
• bird,
• composition,
• textile,
• fish,
• surface,
• contaminant,
• eater,
• industry,
• file,
• exercise,
• chains,
• spice,
• content,
• system,
• fabric,
• dessert,
• firearm,
• drug,
• wood,
• sheet,
• knit,
• piece,
• pot,
• filler,
• grinding,
• ordnance,
• sandwich,
• ground,
• band,
• carriage,
• event,
• part,
• organism,
• outerwear,
• theme,
• fixture,
• fare,
• container,
• prey,
• wrap,
• load,
• expenditure,
• fermion,
• cake,
• acid,
• particulate,
• sulfate,
• panel,
• leather,
• crime,
• regulation,
• toxicity,
• apparatus,
• anchor,
• shoes,
• aggregate,
• process,
• concentrate,
• product,
• wall,
• intermediate,
• ammunition,
• aggression,
• timber,
• denim,
• fuel,
• thing,
• operations,
• animal,
• elements,
• binder,
• tool,
• compound,
• works,
• breast,
• facility,
• music,
• meson,
• weight,
• warship,
• athletics,
• transport,
• laundry,
• weapon,
• loading,
• flour,
• dish,
• chair,
• furnishing,
• athlete,
• flower,
• flavoring,
• grain,
• clay,
• constituent,
• script,
• illness,
• mammal,
• vegetation,
• book,
• commodity,
• artillery,
• exertion,
• armor,
• catalyst,
• rock,
• fat,
• game,
• ballast,
• rail,
• supply,
• medium,
• building,
• housework,
• jewelry,
• abrasive,
• synthetic,
• luggage,
• clothes,
• carbide,
• hammer,
• component,
• vessel,
• sector,
• package,
• aircraft,
• debris,
• pet,
• machinery,
• solvent,
• plant,
• smoker,
• worker,
• debt,
• program,
• company,
• hydrogen,
• damage,
• mass,
• thread,
• coat,
• fiber,
• molecule,
• ball,
• ornament,
• ornamentation,
• mast,
• atmosphere,
• section,
• car,
• labor,
• petrochemical,
• responsibility,
• fragment,
• tank,
• cleaning,
• procedure,
• sword,
• snake,
• maintenance,
• literature,
• offence,
• pan,
• soil,
• hadron,
• jewellery,
• residue,
• paint,
• truck,
• protein,
• subject,
• foliage,
• canvas,
• tights,
• garment,
• implement,
• interior,
• beverage,
• masonry,
• rig,
• seed,
• oil,
• period,
• task,
• isotope,
• hydrocarbon,
• opiate,
• gun,
• salt,
• tape,
• flooring,
• weaponry,
• merchandise,
• web,
• linen,
• livestock,
• sport,
• assembly,
• meat,
• bag,
• sound,
• earth,
• ware,
• alkali,
• background,
• throw,
• waste,
• stock,
• toy,
• activity,
• starches,
• food,
• makeup,
• arms,
• road,
• trailer,
• scale,
• horn,
• document,
• halide,
• carbohydrate,
• picture,
• halogen,
• feed,
• bedding,
• filth,
• element,
• layer,
• bottom,
• dough,
• mechanism,
• instrument,
• vegetable,
• topic,
• utensil,
• traffic,
• mixture,
• unit,
• tranquillizer,
• fluid,
• staple,
• gas,
• oxide,
• area,
• clothing,
• skillet,
• ingredient,
• extra,
• project,
• spoon,
• phase,
• footwear,
• construction,
• beer,
• tile,
• artifact,
• labour,
• substance,
• sphere,
• stain,
• contamination,
• sediment,
• re,
• workout,
• ion,
• work,
• fraction,
• fastener,
• matter,
• deposit,
• ore,
• movement,
• alloy,
• fruit,
• powder,
• grit,
• ship,
• boot,
• data,
• munition,
• cargo,
• dog,
• duty,
• lense,
• rod,
• fitting,
• article,
• laborer,
• zooplankton,
• condition,
• gear,
• hardwood,
• condiment,
• tree,
• operator,
• tower,
• chemical,
• stuff,
• case,
• cloth,
• pelage,
• sulfide,
• cover,
• striker,
• repair,
• issue,
• glove,
• disease,
• bike,
• structure,
• resource,
• housekeeping,
• projectile,
• syrup,
• batter,
• armament,
• narcotic,
• device,
• fibre,
• accumulation,
• disturbance,