Modifiers matching contamination:

• up,
• external,
• residual,
• airborne,
• overhead,
• undesired,
• heavy,
• inorganic,
• environmental,
• hydrophilic,
• insoluble,
• particulate,
• solid,
• volatile,
• organic,
• charged,
• active,
• industrial,
• fluid,
• inert,
• unwanted,
• potential,
• molecular,
• visible,
• nonpolar,
• chemical,
• light,
• off,
• alkaline,
• polar,
• biological,
• interfering,
• minor,
• extraneous,
• salt,
• atmospheric,
• regular,
• hazardous,
• deleterious,
• loose,
• animal,
• metal,
• toxic,
• soft,
• cross,
• heavier,
• natural,
• regulated,
• fecal,
• liquid,
• harmful,
• colloidal,
• irritating,
• metallic,
• incidental,
• gross,
• microbial,
• penetrating,
• possible,
• foreign,
• fragile,
• common,
• internal,
• gaseous,
• basic,
• physical,
• high,

Simple categories matching extraneous:

• material,
• noise,
• matter,
• source,
• light,
• sound,
• condition,
• contaminant,
• body,
• agent,
• symbol,
• substance,
• text,
• difficulty,
• cause,
• artifact,
• detail,
• software,
• character,
• tissue,
• means,
• action,
• event,
• waste,
• cooling,
• compound,
• thing,
• details,
• particle,
• device,
• component,
• equipment,
• constraint,
• factor,
• activity,
• debris,
• gas,
• variable,
• stimulus,
• article,
• channel,
• metal,
• belt,
• solid,
• fixture,
• radiation,
• stuff,
• force,
• fluid,
• movement,
• information,
• constituent,
• grounds,
• file,
• contamination,
• mineral,
• signal,
• line,
• part,
• feature,
• influence,
• interference,
• market,
• dna,
• support,
• organism,
• marking,
• item,
• devices,
• area,
• atmosphere,
• antigen,
• chemical,
• electricity,
• noisemaker,
• cell,
• structure,
• hardware,
• catalyst,
• object,
• danger,