Modifiers matching shrub:

• under,
• colourful,
• leafy,
• evergreen,
• native,
• alien,
• aggressive,
• tall,
• coniferous,
• xerophytic,
• tolerant,
• young,
• tropical,
• woody,
• deciduous,
• domestic,
• small,
• australian,
• low,
• cold,
• hardy,
• spiny,
• broadleaf,
• sensitive,
• larger,
• leguminous,
• short,
• aromatic,
• poisonous,
• invasive,
• large,
• ornamental,
• common,
• colorful,
• old,
• nonnative,
• local,
• perennial,
• outdoor,
• fruiting,
• xeric,
• dense,
• fragrant,
• loving,
• typical,
• leafed,
• indigenous,
• upland,
• smaller,
• toxic,
• tender,
• endemic,
• established,
• scented,
• riparian,
• taller,
• thorny,
• mature,
• exotic,
• beautiful,
• prickly,
• tough,
• flammable,

Simple categories matching tough:

• detective,
• stain,
• hero,
• person,
• surface,
• animal,
• robot,
• situation,
• times,
• area,
• sheet,
• warrior,
• group,
• soldier,
• actor,
• food,
• politician,
• tissue,
• leaf,
• soil,
• demon,
• structure,
• adventurer,
• hardwood,
• condition,
• plant,
• professor,
• polymer,
• fruit,
• outdoorsman,
• bodybuilder,
• shrub,
• villain,
• spy,
• vigilante,
• director,
• case,
• fish,
• hide,
• issue,
• application,
• princess,
• textile,
• veggie,
• workwear,
• fibre,
• coating,
• perennial,
• substance,
• iron,
• explorer,
• terrorist,
• fabric,
• meat,
• criminal,
• state,
• toy,
• decision,
• alloy,
• stuff,
• athlete,
• campaigner,
• vegetable,
• appendage,
• tile,
• part,
• wood,
• object,
• topic,
• poet,
• substrate,
• cowboy,
• thug,
• vine,
• subject,
• material,
• thing,
• job,
• stone,
• metal,
• revolutionary,
• conservative,
• spice,
• conqueror,
• superhero,
• hunter,
• pianist,
• herb,
• seed,
• fiber,
• residue,
• child,
• bronze,
• annual,
• junk,
• tyrant,
• emperor,
• item,
• dictator,
• paper,
• industry,
• rock,
• contaminant,
• solid,
• bully,
• grass,
• plastic,
• location,
• exercise,
• resin,