Modifiers matching fuel:

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

Simple categories matching supplementary:

• substance,
• stuff,
• work,
• import,
• feed,
• material,
• liquid,
• measure,
• form,
• staple,
• food,
• source,
• examination,
• coating,
• section,
• sessions,
• expense,
• nature,
• data,
• service,
• procedure,
• product,
• drawing,
• subject,
• lighting,
• ingredient,
• activity,
• fuel,
• document,
• item,
• part,
• report,
• information,
• arms,
• coagulant,
• nutrient,
• analysis,
• fluid,
• development,
• micronutrient,
• means,
• event,
• oil,
• content,
• fastener,
• equipment,
• drink,