Modifiers matching environment:

• reflective,
• noisy,
• indoor,
• extreme,
• hot,
• controlled,
• marginal,
• unusual,
• natural,
• busy,
• marine,
• disturbed,
• interesting,
• crowded,
• medical,
• heterogeneous,
• outdoor,
• simple,
• demanding,
• secure,
• hazardous,
• neutral,
• oppressive,
• supportive,
• rural,
• damp,
• uncontrolled,
• sensitive,
• aggressive,
• peripheral,
• physical,
• stable,
• dry,
• wireless,
• special,
• mechanical,
• necessary,
• acoustic,
• cultural,
• humid,
• residential,
• interior,
• healthy,
• bright,
• urban,
• technical,
• critical,
• unique,
• wet,
• working,
• under,
• comfortable,
• inclusive,
• corrosive,
• virtual,
• institutional,
• surrounding,
• social,
• experimental,
• industrial,
• harmful,
• particular,
• smaller,
• restrictive,
• exceptional,
• ordinary,
• diverse,
• interactive,
• active,
• external,
• driving,
• local,
• specialized,
• outside,
• warm,
• safe,
• american,
• typical,
• therapeutic,
• sedimentary,
• remote,
• cold,
• dangerous,
• barren,
• artificial,
• open,
• clinical,
• inert,
• macroeconomic,
• structured,
• historic,
• dynamic,
• formal,
• white,
• varied,
• digital,
• static,
• moist,
• localized,
• ambient,
• nonindustrial,
• familiar,
• closed,
• undeveloped,
• coastal,
• dark,
• everyday,
• shared,
• stationary,
• operational,
• larger,
• atmospheric,
• cool,
• home,
• commercial,
• creative,
• legal,
• accessible,
• new,
• internal,
• fragile,
• harsh,
• dirty,
• welcoming,
• large,
• restricted,
• intimate,
• unventilated,
• clean,
• biological,
• ecological,
• occupational,
• suitable,
• challenging,
• violent,
• exterior,
• difficult,
• quiet,
• complicated,
• radio,
• complex,
• real,

Simple categories matching difficult:

• period,
• location,
• area,
• stuff,
• stone,
• surface,
• injury,
• emotion,
• object,
• container,
• profession,
• material,
• circumstances,
• obstacle,
• text,
• item,
• works,
• joint,
• time,
• pregnancy,
• space,
• subject,
• behaviour,
• disease,
• compound,
• tumour,
• information,
• article,
• cave,
• flow,
• video,
• fiber,
• rock,
• condition,
• thing,
• access,
• times,
• event,
• carbohydrate,
• work,
• sugar,
• stain,
• tray,
• soil,
• peak,
• plastic,
• issue,
• product,
• commodity,
• matrix,
• region,
• measurement,
• math,
• fuel,
• powder,
• content,
• topic,
• idea,
• signal,
• symptom,
• suit,
• deposit,
• maneuver,
• coating,
• zone,
• sector,
• science,
• behavior,
• fluid,
• medium,
• ground,
• hardware,
• mission,
• substrate,
• dermatosis,
• fibre,
• picture,
• surgery,
• tank,
• card,
• pose,
• feature,
• concept,
• placement,
• substance,
• disorder,
• instrument,
• discipline,
• structure,
• component,
• question,
• target,
• apparatus,
• part,
• illness,
• weather,
• site,
• contaminant,
• state,
• reality,
• labor,
• waste,
• conflict,
• class,
• dirt,
• years,
• bond,
• position,
• insecticide,
• installation,
• fire,
• dog,
• case,
• treatment,
• problem,
• situation,
• artifact,
• shot,
• activity,
• terrain,
• place,
• trait,
• process,
• image,
• delivery,
• vessel,
• setting,
• course,
• job,
• feeling,
• odor,
• matter,
• texture,
• language,
• system,
• shape,
• institution,
• quarry,
• crossing,
• group,
• particle,
• food,
• concern,
• original,
• polymer,
• point,
• infection,
• articulator,
• fabric,
• environment,
• metal,