Modifiers matching fuel:

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

Simple categories matching flammable:

• document,
• material,
• vapors,
• layer,
• item,
• plant,
• structure,
• fibre,
• monomer,
• object,
• filling,
• vegetation,
• combustible,
• gas,
• substance,
• agent,
• refrigerant,
• solvent,
• fabric,
• liquid,
• propellant,
• particle,
• substrate,
• property,
• anesthetic,
• part,
• lamp,
• solid,
• commodity,
• fuel,
• fire,
• anaesthetic,
• decoration,
• shrub,
• fiber,
• tree,
• liquor,
• waste,
• piece,
• surface,
• alcohol,
• corrosive,
• article,
• product,
• brush,
• sheet,
• atmosphere,
• content,
• mixture,
• light,
• component,
• nature,
• evergreen,
• thing,
• metal,
• powder,
• fluid,
• chemical,
• matter,
• debris,
• hydrocarbon,