Modifiers matching investigation:

• special,
• diagnostic,
• geologic,
• governmental,
• compulsory,
• spatial,
• complementary,
• environmental,
• minor,
• gastrointestinal,
• technical,
• expensive,
• clinical,
• chromosomal,
• simple,
• gi,
• recent,
• specialised,
• detailed,
• medical,
• scientific,
• radiological,
• regulatory,
• relevant,
• social,
• invasive,
• cardiac,
• under,
• experimental,
• specialized,
• official,
• surgical,
• necessary,
• preoperative,
• archaeological,
• scholarly,
• explicit,
• routine,
• formal,
• instrumental,
• cellular,
• demanding,
• major,
• important,
• out,
• current,
• federal,
• forensic,
• painful,
• basic,
• haematological,
• endoscopic,
• complex,
• molecular,
• legal,
• extensive,
• appropriate,
• criminal,
• supplemental,
• administrative,
• costly,
• common,
• empirical,
• essential,
• good,
• departmental,
• additional,
• intrusive,

Simple categories matching costly:

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