Modifiers matching metal:

• unhealthy,
• seventeen,
• toxic,
• persistent,
• heavy,
• noble,
• pure,
• carcinogenic,
• inert,
• bulky,
• precious,
• sustainable,
• anodic,
• charged,
• solar,
• extreme,
• dry,
• exotic,
• nonporous,
• structured,
• innocuous,
• national,
• waterborne,
• acidic,
• genuine,
• pyrotechnic,
• common,
• active,
• rare,
• good,
• valuable,
• white,
• transparent,
• compressible,
• dental,
• unusual,
• polyvalent,
• endogenous,
• desirable,
• strong,
• dietary,
• sacrificial,
• offer,
• finer,
• secondary,
• shiny,
• general,
• valent,
• silvery,
• nutrient,
• ceramic,
• hard,
• commercial,
• positive,
• insoluble,
• extraneous,
• melting,
• additional,
• ferromagnetic,
• fluid,
• antimicrobial,
• new,
• thick,
• harsh,
• continuous,
• refined,
• virgin,
• beneficial,
• impure,
• cold,
• polished,
• strategic,
• flammable,
• friendly,
• tough,
• opaque,
• skeletal,
• uncompensated,
• real,
• homogeneous,
• natural,
• bivalent,
• deleterious,
• semiconducting,
• special,
• alternative,
• expensive,
• significant,
• resistant,
• divalent,
• foreign,
• environmental,
• miscellaneous,
• radioactive,
• allergenic,
• noxious,
• organic,
• single,
• airborne,
• dead,
• tubular,
• relevant,
• resilient,
• prestigious,
• refractive,
• layer,
• radiopaque,
• stable,
• color,
• harmful,
• combustible,
• costly,
• compliant,
• basic,
• semirigid,
• alkaline,
• nonmagnetic,
• stronger,
• lighter,
• available,
• cool,
• major,
• amalgamative,
• nontraditional,
• impermeable,
• critical,
• physical,
• flat,
• particulate,
• popular,
• anisotropic,
• surrounding,
• total,
• protective,
• old,
• plastic,
• anthropogenic,
• antique,
• fixed,
• multiple,
• moldable,
• difficult,
• hidden,
• characteristic,
• interfering,
• level,
• reactive,
• distinct,
• underwater,
• sleek,
• specified,
• sensitive,
• particular,
• nonradioactive,
• cathodic,
• isotropic,
• sticky,
• polar,
• vital,
• nonmetallic,
• disordered,
• glassy,
• woven,
• binding,
• divisible,
• residual,
• semiprecious,
• modern,
• corrosive,
• functional,
• unconventional,
• transuranic,
• viscous,
• acid,
• consumable,
• nontoxic,
• small,
• diffusing,
• industrial,
• coloured,
• smaller,
• cylindrical,
• prepared,
• raw,
• finished,
• crustal,
• typical,
• nutritional,
• stock,
• suitable,
• interesting,
• iron,
• conventional,
• amorphous,
• weaker,
• fine,
• familiar,
• weatherproof,
• minor,
• oxidizable,
• essential,
• exogenous,
• deadly,
• polish,
• electropositive,
• affordable,
• reusable,
• rough,
• up,
• poisonous,
• interior,
• recyclable,
• painted,
• tensile,
• primary,
• high,
• light,
• elemental,
• economic,
• several,
• heavier,
• soft,
• elementary,
• variable,
• monetary,
• dissolved,
• smooth,
• tenacious,
• lustrous,
• base,
• pliable,
• appropriate,
• necessary,
• historic,
• softer,
• nonessential,
• massive,
• fast,
• colloidal,
• passive,
• paramagnetic,
• neutral,
• individual,
• utilitarian,
• non-ferrous,
• benign,
• springy,
• important,
• vulnerable,
• decorative,
• recoverable,
• specular,
• rigid,
• reliable,
• mobile,
• traditional,
• monovalent,
• native,
• beautiful,
• crystalline,
• free,
• noncontroversial,
• brushed,
• unwanted,
• dense,
• suspended,
• salt,
• catalytic,
• molten,
• porous,
• harmless,
• cationic,
• low,
• foldable,
• rich,
• ductile,
• granular,
• indigenous,
• proper,
• separate,
• inexpensive,
• delicate,
• thin,
• possible,
• world,
• regulated,
• hot,
• damaging,
• atomic,
• simple,
• medium,
• electrical,
• hazardous,
• underlying,
• antibacterial,
• marketable,
• flexible,
• contemporary,
• over,
• volatile,
• effective,
• out,
• technological,
• inorganic,
• number,
• polycrystalline,
• lightweight,
• ornamental,
• waterproof,
• energetic,
• useful,
• seven,
• dangerous,
• wet,
• textured,
• buoyant,
• malleable,
• chemical,
• reflective,
• specialized,
• tangible,
• standard,
• red,
• attractive,
• liquid,
• sturdy,
• monolithic,
• bright,
• stray,
• elastic,
• mixed,
• automotive,
• dissimilar,
• harder,
• convenient,
• abundant,
• key,
• antiferromagnetic,
• safe,
• cubic,
• stabilizing,
• alloyed,
• clean,
• robust,
• concrete,
• brittle,
• colored,
• stimulating,
• usual,
• actual,
• colour,
• advanced,
• solid,
• non-precious,
• diverse,
• regular,
• contrasting,
• electric,
• large,
• complex,
• central,
• refractory,
• architectural,
• undesirable,
• normal,
• trivalent,
• ordinary,
• covalent,
• immiscible,
• conductive,
• earthy,
• supporting,
• coated,
• ionic,
• sintered,
• structural,
• intermediate,
• electronic,
• magnetic,
• premium,
• ferrous,
• powdered,
• cheap,
• elegant,
• cheaper,
• practical,
• diamagnetic,
• working,
• soluble,
• explosive,
• durable,
• varied,

Simple categories matching opaque:

• original,
• material,
• barrier,
• obstacle,
• object,
• beverage,
• image,
• stone,
• surface,
• medium,
• gemstone,
• bag,
• part,
• film,
• item,
• matrix,
• substrate,
• substance,
• foodstuff,
• document,
• coating,
• content,
• mark,
• container,
• contaminant,
• fluid,
• cell,
• plastic,
• rock,
• powder,
• sunscreen,
• fence,
• article,
• copy,
• filler,
• aggregate,
• language,
• ingredient,
• product,
• mineral,
• pigment,
• metal,
• sack,
• matter,
• body,
• creature,
• ink,
• adhesive,
• system,
• component,
• symbol,
• fiber,
• particle,
• structure,
• glass,
• imperfection,
• gem,
• paint,
• assembly,
• paper,
• tissue,
• picture,
• layer,
• sheet,
• solid,
• liquid,
• obstruction,
• conductor,
• oxide,
• web,
• fabric,