Modifiers matching insecticide:

• synthetic,
• cheap,
• organic,
• costly,
• natural,
• persistent,
• chemical,
• botanical,
• difficult,
• older,
• old,
• hazardous,
• cheaper,
• toxic,
• new,
• common,
• modern,
• inorganic,
• suitable,
• agricultural,
• homemade,
• residual,

Simple categories matching costly:

• failure,
• ingredient,
• gem,
• intervention,
• material,
• metal,
• part,
• insurance,
• item,
• business,
• substance,
• innovation,
• pet,
• system,
• equipment,
• halogen,
• beverage,
• procedure,
• component,
• activity,
• repair,
• mineral,
• work,
• crime,
• facility,
• benefit,
• practitioner,
• accommodation,
• works,
• condition,
• illness,
• area,
• disease,
• mechanism,
• textile,
• treatment,
• liquid,
• gizmo,
• surprise,
• instrument,
• penalty,
• article,
• disorder,
• fabric,
• infection,
• investigation,
• fitting,
• assets,
• machine,
• drug,
• object,
• vehicle,
• spice,
• measure,
• sensor,
• test,
• project,
• control,
• food,
• undertaking,
• occurrence,
• use,
• event,
• wood,
• action,
• fuel,
• macromolecule,
• connection,
• cheese,
• care,
• medium,
• addition,
• study,
• resource,
• setting,
• tissue,
• stone,
• compound,
• change,
• signal,
• placement,
• testing,
• merchandise,
• insecticide,
• element,
• complication,
• institution,
• constituent,
• animal,
• structure,
• product,
• stuff,
• technician,
• extra,
• preparation,
• modality,
• hardwood,
• addiction,
• process,
• thing,
• option,
• ceremony,
• hardware,
• trait,
• filler,
• chemical,
• behaviour,
• behavior,
• service,
• possession,