Modifiers matching occurrence:

• common,
• natural,
• localised,
• unforeseen,
• environmental,
• unexpected,
• dynamic,
• cataclysmic,
• untoward,
• serious,
• unusual,
• everyday,
• dangerous,
• special,
• external,
• extraordinary,
• planned,
• happy,
• superficial,
• sudden,
• random,
• unfortunate,
• exceptional,
• outside,
• harmful,
• unlikely,
• costly,
• temporary,
• extreme,
• exogenous,
• autonomic,
• unpredictable,
• rare,
• catastrophic,
• possible,
• internal,
• interactive,
• accidental,
• seismic,
• strange,
• miscellaneous,
• routine,
• climatic,
• awesome,
• undesirable,
• supernatural,
• positive,
• acoustic,
• elemental,
• violent,
• organizational,
• hazardous,
• adverse,
• relevant,
• simple,
• motivational,
• discrete,
• geologic,
• musical,
• physical,
• single,
• criminal,
• dramatic,
• unplanned,
• odd,
• unforeseeable,
• future,
• geographical,
• significant,
• medical,
• abnormal,
• stressful,
• devastating,
• unavoidable,
• historical,
• tragic,
• disruptive,
• terrifying,
• recent,
• severe,
• benign,
• political,
• disastrous,
• periodic,
• damaging,
• deviant,
• normal,
• transient,
• small,
• deadly,
• unique,
• interesting,
• inanimate,
• ordinary,
• outdoor,
• meaningful,
• weather,
• negative,
• spontaneous,
• operational,
• neurologic,
• unpleasant,
• commonplace,
• astronomical,
• cosmic,
• unwanted,
• major,
• seasonal,
• traumatic,
• infrequent,
• local,
• specified,
• annual,
• unanticipated,
• irregular,
• corporeal,
• neurological,
• social,
• uncertain,

Simple categories matching harmful:

• occurrence,
• item,
• substance,
• fumes,
• chemical,
• place,
• contamination,
• trait,
• infection,
• metal,
• organism,
• beverage,
• conduct,
• ion,
• material,
• residual,
• behaviour,
• sport,
• bacteria,
• event,
• code,
• microorganism,
• stuff,
• compound,
• illness,
• deeds,
• insect,
• contaminant,
• practice,
• email,
• nutrient,
• yeast,
• filler,
• liquid,
• intervention,
• software,
• power,
• drug,
• solvent,
• germ,
• quality,
• problem,
• sweetener,
• antigen,
• pollutant,
• commodity,
• parasite,
• addiction,
• force,
• inhalant,
• experience,
• molecule,
• occupation,
• radiation,
• object,
• phenomenon,
• frequency,
• test,
• complication,
• environment,
• predator,
• stain,
• adulterant,
• thing,
• subsidy,
• crime,
• pest,
• constituent,
• idea,
• choice,
• symptom,
• agent,
• information,
• microbe,
• monomer,
• procedure,
• group,
• state,
• act,
• food,
• therapy,
• action,
• residue,
• energy,
• invertebrate,
• ingredient,
• fish,
• influence,
• arachnid,
• fluid,
• product,
• industry,
• herb,
• curio,
• element,
• creature,
• alkaloid,
• component,
• irradiation,
• radical,
• weather,
• matter,
• fiber,
• gene,
• plant,
• bug,
• content,
• particle,
• virus,
• emission,
• elements,
• stress,
• entity,
• factor,
• disease,
• work,
• aerosol,
• cell,
• article,
• fauna,
• mineral,
• behavior,
• situation,
• stimulant,
• pesticide,
• abnormality,
• light,
• result,
• animal,
• stimulus,
• reactant,
• toxin,
• fat,
• preservative,
• danger,
• habit,
• flavoring,
• treatment,
• exposure,
• diuretic,
• circumstances,
• waste,
• impurity,
• process,
• gas,
• medication,
• aggression,
• intermediate,
• property,
• fraction,
• utterance,
• defect,
• condition,
• intruder,
• allergen,
• cause,
• salt,
• fumigant,
• atmosphere,
• oxidant,
• caterpillar,
• pathology,
• tool,
• tax,
• pathogen,
• volatile,
• solute,
• change,
• sector,
• consequence,
• notion,
• halogen,
• effect,
• emotion,
• service,
• fuel,
• weeds,
• program,
• activity,
• disorder,
• sediment,
• deposit,
• drinking,