Modifiers matching stimulant:

• chemical,
• cardiovascular,
• destructive,
• powerful,
• synthetic,
• manufactured,
• prescribed,
• strong,
• regular,
• psychoactive,
• common,
• major,
• illegal,
• controversial,
• controlled,
• exogenous,
• biological,
• physical,
• sympathomimetic,
• pharmacologic,
• potent,
• familiar,
• herbal,
• toxic,
• illicit,
• bitter,
• mild,
• unhealthy,
• pharmaceutical,
• artificial,
• natural,
• medical,
• psychomotor,
• harder,
• legal,
• ventilatory,
• harsh,
• nervous,
• addictive,
• soft,
• pharmacological,
• active,
• traditional,
• inert,
• harmful,
• simple,
• sexual,
• cardiac,
• popular,
• recreational,
• unnatural,
• dangerous,
• immune,
• serious,

Simple categories matching harmful:

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