Modifiers matching contaminant:

• airborne,
• smaller,
• dissolved,
• hazardous,
• harmful,
• corrosive,
• environmental,
• inorganic,
• out,
• lightweight,
• energetic,
• cationic,
• nonmetallic,
• synthetic,
• organic,
• persistent,
• suspended,
• natural,
• fluid,
• molecular,
• residual,
• chemical,
• unsightly,
• hydrophobic,
• ordinary,
• animal,
• size,
• particulate,
• concrete,
• common,
• light,
• dry,
• solid,
• up,
• damaging,
• noninfectious,
• regulated,
• viscous,
• noxious,
• small,
• passive,
• stable,
• irritating,
• agricultural,
• unpleasant,
• oleophilic,
• ferrous,
• hard,
• additional,
• single,
• insoluble,
• magnetic,
• noncombustible,
• tough,
• undesirable,
• large,
• carbonaceous,
• visible,
• mobile,
• structural,
• radiological,
• granular,
• anthropogenic,
• major,
• over,
• fibrous,
• charged,
• acidic,
• moving,
• coarse,
• unacceptable,
• invisible,
• alkaline,
• atmospheric,
• off,
• non-metallic,
• unique,
• polar,
• biodegradable,
• nonpolar,
• multiple,
• colloidal,
• surrounding,
• sticky,
• excessive,
• key,
• minute,
• ic,
• potential,
• secondary,
• outside,
• liquid,
• stubborn,
• inedible,
• unexpected,
• experimental,
• oily,
• minor,
• poisonous,
• accidental,
• heavy,
• lighter,
• new,
• undesired,
• removable,
• outdoor,
• abundant,
• unusual,
• anionic,
• local,
• dense,
• dermal,
• siliceous,
• familiar,
• everyday,
• nasty,
• reactive,
• salt,
• exogenous,
• typical,
• world,
• polymeric,
• biological,
• dietary,
• basic,
• abrasive,
• ferromagnetic,
• unseen,
• waterborne,
• refractory,
• important,
• critical,
• conventional,
• usual,
• industrial,
• foreign,
• deadly,
• combustible,
• intracellular,
• soft,
• slippery,
• greasy,
• harsh,
• mental,
• individual,
• indoor,
• semisolid,
• elemental,
• microscopic,
• clean,
• hydrophilic,
• heavier,
• gaseous,
• related,
• model,
• active,
• extraneous,
• interfering,
• toxic,
• dangerous,
• aqueous,
• endogenous,
• floating,
• finer,
• ionic,
• gross,
• biologic,
• ambient,
• mechanical,
• unwanted,
• lipophilic,
• traditional,
• meteorological,
• modern,
• caustic,
• numerous,
• harmless,
• larger,
• incidental,
• difficult,
• level,
• deleterious,
• several,
• loose,
• carcinogenic,
• domestic,
• conservative,
• fine,
• possible,
• metal,
• opaque,
• diverse,
• radioactive,
• physical,
• detrimental,
• external,
• metallic,
• unbound,
• microbial,
• first,
• volatile,
• miscellaneous,
• urban,
• separate,
• pure,
• conductive,
• unhealthy,
• soluble,

Simple categories matching microscopic:

• material,
• organism,
• procedure,
• object,
• imperfection,
• transport,
• particle,
• eukaryote,
• animal,
• fauna,
• agent,
• groove,
• medium,
• system,
• theory,
• germ,
• entity,
• feature,
• invertebrate,
• event,
• contaminant,
• creature,
• level,
• epiphyte,
• structure,
• molecule,
• substance,
• property,
• filament,
• critter,
• fiber,
• volume,
• cell,
• protoctist,
• plant,
• prey,
• defect,
• virus,
• quantity,
• macromolecule,
• insect,
• algae,
• change,
• clue,
• machine,
• subject,
• space,
• character,
• force,
• form,
• pollutant,
• bug,
• details,
• flaw,
• thing,
• particulate,
• state,
• dimension,
• pest,
• impurity,
• roundworm,
• movement,
• substrate,
• plankton,
• pattern,
• arthropod,
• host,
• part,
• parameter,
• body,
• mechanism,
• phenomenon,
• deformation,
• parasite,
• characteristic,
• irregularity,
• allergen,
• sediment,
• zone,
• engine,
• instrument,
• information,
• pathogen,
• unit,
• length,
• process,
• detritus,
• difference,
• world,