Modifiers matching metal:

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

Simple categories matching difficult:

• fuel,
• fire,
• area,
• location,
• commodity,
• information,
• process,
• question,
• math,
• illness,
• emotion,
• flow,
• signal,
• surface,
• material,
• mission,
• sector,
• treatment,
• target,
• video,
• problem,
• surgery,
• item,
• group,
• disease,
• place,
• disorder,
• subject,
• class,
• suit,
• stuff,
• setting,
• stain,
• vessel,
• condition,
• shape,
• article,
• coating,
• language,
• site,
• deposit,
• institution,
• measurement,
• substance,
• odor,
• labor,
• instrument,
• delivery,
• product,
• object,
• fluid,
• feeling,
• course,
• discipline,
• apparatus,
• state,
• situation,
• peak,
• dog,
• pregnancy,
• soil,
• installation,
• reality,
• sugar,
• contaminant,
• crossing,
• fibre,
• weather,
• tank,
• dirt,
• system,
• position,
• concept,
• point,
• times,
• card,
• activity,
• dermatosis,
• part,
• idea,
• terrain,
• job,
• topic,
• environment,
• injury,
• matrix,
• waste,
• component,
• placement,
• tray,
• shot,
• particle,
• powder,
• tumour,
• plastic,
• quarry,
• conflict,
• cave,
• food,
• science,
• behavior,
• infection,
• maneuver,
• rock,
• fiber,
• text,
• polymer,
• time,
• years,
• thing,
• feature,
• carbohydrate,
• event,
• joint,
• image,
• profession,
• compound,
• ground,
• stone,
• access,
• region,
• container,
• behaviour,
• texture,
• bond,
• articulator,
• hardware,
• obstacle,
• substrate,
• matter,
• works,
• metal,
• artifact,
• fabric,
• content,
• zone,
• issue,
• symptom,
• structure,
• space,
• trait,
• concern,
• pose,
• circumstances,
• original,
• work,
• insecticide,
• medium,
• case,
• picture,
• period,