Modifiers matching obstruction:

• adjacent,
• past,
• permanent,
• physical,
• underground,
• solid,
• vertical,
• fixed,
• temporary,
• opaque,
• major,
• hidden,
• immovable,
• linear,
• indoor,
• featureless,
• artificial,
• cooler,
• nearby,
• virtual,
• movable,
• surrounding,
• removable,
• outdoor,
• relevant,
• layer,
• impenetrable,
• visual,
• overhead,
• short,
• rigid,
• over,
• horizontal,
• multiple,
• smaller,
• lateral,
• dense,
• urethral,
• metal,
• raised,
• unusual,
• terrestrial,
• hard,
• larger,
• visible,
• lighted,
• subsurface,
• elongated,
• current,
• discrete,
• local,
• up,
• geographic,
• upright,
• topical,
• bigger,
• electrical,
• significant,
• tall,
• nasal,
• taller,
• clear,
• environmental,
• under,
• isolated,
• small,
• simple,
• irregular,
• minor,
• mechanical,
• common,
• low,
• external,
• hazardous,
• additional,
• spatial,
• level,
• internal,
• insurmountable,
• typical,
• hydraulic,
• structural,
• natural,
• underwater,
• large,

Simple categories matching environmental:

• catalyst,
• designer,
• condition,
• therapy,
• surface,
• thing,
• contaminant,
• input,
• reservoir,
• performance,
• hazard,
• limitation,
• regulation,
• event,
• streptococcus,
• dynamics,
• organization,
• change,
• sensor,
• job,
• object,
• thought,
• attribute,
• process,
• toxicant,
• agreement,
• knowledge,
• obstruction,
• chemistry,
• cue,
• activity,
• pest,
• toxin,
• issue,
• machinery,
• initiative,
• agent,
• testing,
• substance,
• information,
• zone,
• works,
• education,
• circumstances,
• agency,
• matrix,
• data,
• barrier,
• equipment,
• report,
• consultant,
• perturbation,
• form,
• hydraulics,
• care,
• disaster,
• quality,
• interference,
• test,
• scene,
• shift,
• program,
• standard,
• fomite,
• water,
• scientist,
• audio,
• fixture,
• theme,
• arrangement,
• dimension,
• politics,
• fact,
• behavior,
• stewardship,
• effort,
• treasure,
• analysis,
• fluctuation,
• disturbance,
• odor,
• injury,
• review,
• movement,
• painting,
• cause,
• organisation,
• challenge,
• unit,
• discipline,
• output,
• difference,
• group,
• security,
• technique,
• problem,
• assets,
• influence,
• meeting,
• property,
• impurity,
• aspect,
• body,
• medium,
• biotechnology,
• marker,
• tissue,
• stress,
• aggression,
• constituent,
• instrument,
• piece,
• receptor,
• microbe,
• sample,
• substrate,
• bacteria,
• cleaning,
• modification,
• carcinogen,
• location,
• protection,
• conflict,
• pressure,
• whole,
• noise,
• force,
• design,
• institution,
• fuel,
• component,
• antigen,
• sustainability,
• simulation,
• specialty,
• preservation,
• concentration,
• chemical,
• point,
• indicator,
• toxicology,
• coating,
• cd,
• degradation,
• directive,
• stimulation,
• duty,
• fabric,
• resistance,
• sound,
• assay,
• expense,
• repair,
• harm,
• product,
• status,
• difficulty,
• discomfort,
• commitment,
• metal,
• ngo,
• study,
• poison,
• illness,
• material,
• utility,
• grouping,
• state,
• asset,
• layer,
• text,
• catalysis,
• odour,
• task,
• field,
• profession,
• tension,
• weather,
• pollution,
• recovery,
• entity,
• gas,
• signal,
• practice,
• development,
• scheme,
• resource,
• region,
• values,
• malady,
• pollutant,
• light,
• advisor,
• source,
• topic,
• parameter,
• touch,
• structure,
• use,
• business,
• stuff,
• specialist,
• infrastructure,
• user,
• area,
• clue,
• game,
• conservation,
• matter,
• interaction,
• goal,
• rehabilitation,
• measurement,
• effect,
• elements,
• statute,
• idea,
• contamination,
• alteration,
• mixture,
• deed,
• technology,
• constraint,
• engineering,
• ligand,
• sensation,
• sensitivity,
• improvement,
• document,
• facility,
• liquid,
• stone,
• organism,
• muffler,
• solid,
• plan,
• scan,
• support,
• educator,
• stimulus,
• gradient,
• fluid,
• expert,
• science,
• project,
• detector,
• debris,
• industry,
• failure,
• item,
• power,
• exposure,
• allergen,
• trait,
• selection,
• occurrence,
• print,
• policy,
• experience,
• predator,
• tragedy,
• trauma,
• situation,
• variation,
• fee,
• adaptation,
• employment,
• space,
• law,
• feature,
• enhancement,
• sampling,
• tax,
• subject,
• installation,
• pathogen,
• company,
• health,
• disease,
• control,
• trouble,
• waste,
• catastrophe,
• mineral,
• pickup,
• level,
• belief,
• characteristic,
• time,
• disorder,
• action,
• phenomenon,
• niche,
• torque,
• economist,
• stressor,
• tool,
• management,
• flow,
• message,
• work,
• tolerance,
• obstacle,
• compound,
• division,
• service,
• incident,
• impact,
• danger,
• device,
• damage,
• consideration,
• factor,
• variable,
• cost,
• benefit,
• consequence,
• measure,
• requirement,
• insult,
• system,
• professional,
• model,
• contact,
• attack,
• threat,
• communication,
• microorganism,
• commodity,
• calamity,
• footprint,
• efficiency,
• investigation,
• heritage,
• hepatotoxin,