Modifiers matching nature:

• personal,
• permanent,
• off,
• traditional,
• delicate,
• specialized,
• proprietary,
• technical,
• social,
• stable,
• dynamic,
• nonhuman,
• larger,
• invisible,
• urgent,
• uncertain,
• temporary,
• intimate,
• poisonous,
• physical,
• global,
• aggressive,
• mathematical,
• higher,
• professional,
• complex,
• practical,
• spiritual,
• sensitive,
• political,
• basic,
• hierarchical,
• destructive,
• essential,
• emotional,
• bland,
• cold,
• educational,
• portable,
• cyclical,
• smaller,
• systemic,
• confidential,
• evil,
• psychological,
• institutional,
• catalytic,
• routine,
• fixed,
• adult,
• domestic,
• divine,
• conceptual,
• repetitive,
• brittle,
• serious,
• tangible,
• cultural,
• real,
• bizarre,
• humanitarian,
• specialised,
• official,
• macroscopic,
• standard,
• lethal,
• general,
• diverse,
• supplementary,
• inflammable,
• heterogeneous,
• carbonaceous,
• commercial,
• unique,
• threatening,
• electrical,
• exotic,
• violent,
• visible,
• inorganic,
• civic,
• utilitarian,
• hydrophobic,
• socioeconomic,
• volatile,
• inner,
• subjective,
• biological,
• organizational,
• acid,
• organisational,
• incidental,
• dangerous,
• transmittable,
• toxic,
• municipal,
• logical,
• philosophical,
• everyday,
• continuous,
• transient,
• impervious,
• numerical,
• combustible,
• absolute,
• economic,
• regulatory,
• stochastic,
• criminal,
• local,
• durable,
• informational,
• infectious,
• simple,
• technological,
• functional,
• intrinsic,
• inanimate,
• unskilled,
• mobile,
• subtle,
• acidic,
• verbal,
• financial,
• disposable,
• unpleasant,
• virtual,
• individual,
• absorbent,
• scientific,
• important,
• public,
• supernatural,
• abstract,
• magnetic,
• acute,
• sexual,
• clinical,
• creative,
• annoying,
• contagious,
• sophisticated,
• edible,
• granular,
• sharp,
• private,
• governmental,
• intellectual,
• planar,
• geometrical,
• authentic,
• distinct,
• explosive,
• structural,
• immortal,
• aesthetic,
• varied,
• noxious,
• consumable,
• interpersonal,
• natural,
• chemical,
• promotional,
• flammable,
• factual,
• valuable,
• passive,
• developmental,
• psychosomatic,
• feminine,
• particulate,
• mundane,
• synthetic,
• true,
• invasive,
• mechanical,
• philological,
• perishable,
• unusual,
• religious,
• nonsensitive,
• operational,
• hazardous,
• immaterial,
• friable,
• organic,
• administrative,
• common,
• theoretical,
• nonliving,
• colloidal,
• legal,
• beautiful,
• critical,
• seasonal,
• monetary,
• fragile,
• secular,
• temporal,
• ancillary,
• solid,
• symbolic,
• nutrient,
• immutable,
• sinful,
• decorative,

Simple categories matching acidic:

• ligand,
• food,
• beverage,
• seasoning,
• property,
• fruit,
• ingredient,
• medium,
• waste,
• salt,
• surface,
• fertilizer,
• polymer,
• substance,
• secretion,
• solute,
• foodstuff,
• drug,
• disinfectant,
• poison,
• material,
• vegetable,
• matter,
• liquid,
• nature,
• wine,
• wetland,
• zeolite,
• thing,
• protein,
• contaminant,
• condiment,
• mixture,
• lipid,
• drink,
• buffer,
• fluid,
• substrate,
• mineral,
• inhibitor,
• anion,
• system,
• nitrate,
• ion,
• constituent,
• molecule,
• component,
• monomer,
• flavor,
• antibiotic,
• level,
• grain,
• compound,
• medicament,
• marinade,
• chloride,
• oxide,
• metal,
• residue,
• precipitation,
• agent,
• juice,
• paper,
• rock,
• oligosaccharide,
• veggie,
• radical,
• meat,
• fertiliser,
• tenderizer,
• bath,
• metabolite,
• medication,
• drinking,
• polysaccharide,
• macromolecule,
• solution,
• grouping,
• carbohydrate,
• group,
• aggregate,
• filler,
• pharmaceutical,
• item,
• precursor,
• coagulant,
• halide,
• soil,
• gas,
• mixer,
• nsaid,
• medicine,
• chemical,
• acid,
• catalyst,
• water,
• liquor,