Modifiers matching obstruction:

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

Simple categories matching immovable:

• property,
• object,
• form,
• thing,
• machine,
• feature,
• point,
• assets,
• article,
• artefact,
• facility,
• obstruction,
• fixture,
• artifact,
• structure,
• vehicle,
• equipment,
• impediment,
• mass,
• barrier,
• item,
• surface,
• part,