Modifiers matching illumination:

• artificial,
• general,
• unwanted,
• bright,
• controlled,
• external,
• strong,
• light,
• ordinary,
• normal,
• weak,
• special,
• outdoor,
• ambient,
• architectural,
• incident,

Simple categories matching unwanted:

• process,
• impurity,
• pest,
• item,
• intrusion,
• constituent,
• software,
• signal,
• material,
• species,
• nuisance,
• container,
• organism,
• surface,
• document,
• conduct,
• insect,
• animal,
• information,
• parasite,
• branch,
• fuel,
• entrant,
• scavenger,
• game,
• substance,
• friend,
• condition,
• layer,
• grub,
• bacteria,
• activity,
• target,
• advert,
• content,
• place,
• action,
• thing,
• panel,
• herbivore,
• state,
• molecule,
• blemish,
• germ,
• illumination,
• soil,
• fluid,
• particle,
• contaminant,
• person,
• movement,
• phenomenon,
• occurrence,
• pesticide,
• instrument,
• yeast,
• residue,
• hair,
• disturbance,
• agent,
• article,
• artifact,
• rodent,
• hardwood,
• incident,
• light,
• solute,
• comment,
• acid,
• liquid,
• communication,
• event,
• body,
• nonsense,
• ion,
• structure,
• critter,
• metal,
• reptile,
• predator,
• consequence,
• behaviour,
• thought,
• larva,
• microorganism,
• infection,
• piece,
• situation,
• cell,
• fabric,
• effect,
• chemical,
• papers,
• email,
• atom,
• vermin,
• object,
• mammal,
• advertisement,
• portion,
• effluent,
• bedfellow,
• furniture,
• space,
• odor,
• user,
• sediment,
• treasure,
• solicitation,
• shade,
• growth,
• smell,
• artefact,
• appliance,
• code,
• happening,
• medication,
• interference,
• entity,
• bird,
• grass,
• area,
• feature,
• intermediate,
• people,
• part,
• mineral,
• souvenir,
• mail,
• byproduct,
• inhabitant,
• program,
• vegetation,
• gas,
• literature,
• intruder,
• creature,
• elements,
• spam,
• ingredient,
• tree,
• acceleration,
• microbe,
• solid,
• response,
• compound,
• particulate,
• symptom,
• caller,
• substrate,
• waste,
• odour,
• medium,
• coating,
• fungus,
• fish,
• deposit,
• tissue,
• volatile,
• matter,
• emotion,
• reaction,
• textile,
• component,
• stain,
• noise,
• pollutant,
• contamination,
• message,
• trait,
• filler,
• equipment,
• variable,
• pet,
• input,
• extra,
• feeder,
• variation,
• motion,
• sound,
• change,
• child,
• view,
• file,
• adulterant,
• plant,
• trace,
• stuff,
• debris,
• protein,
• behavior,
• energy,
• folder,
• emission,