Modifiers matching acid:

• soft,
• dangerous,
• fatty,
• organic,
• essential,
• dissolved,
• wholesome,
• weak,
• aggressive,
• natural,
• inorganic,
• lipophilic,
• heavy,
• agricultural,
• simple,
• neutral,
• safe,
• carboxylic,
• cyclic,
• heterogeneous,
• heterocyclic,
• monovalent,
• unwanted,
• useful,
• extra,
• amino,
• hydroxy,
• dietary,
• volatile,
• mild,
• aromatic,
• common,
• hard,
• unusual,
• strong,
• acid,
• active,
• small,
• nonvolatile,
• exogenous,
• nitrogenous,
• nontoxic,
• polyunsaturated,
• base,
• acidic,
• additional,
• gaseous,
• ordinary,
• poisonous,
• cellular,
• saturated,
• popular,
• possible,
• solid,
• monocarboxylic,
• conventional,
• accessible,
• oxidizable,
• metabolic,
• digestive,
• basic,
• endogenous,
• wet,
• preservative,
• free,
• phosphorous,
• relevant,
• aqueous,
• available,
• little,
• hydrophobic,
• edible,
• aliphatic,
• polymeric,
• acetic,
• monounsaturated,
• chemical,
• liquid,
• industrial,
• corrosive,
• hydrophilic,
• unsaturated,

Simple categories matching nontoxic:

• leaf,
• material,
• buffer,
• metal,
• ingredient,
• substance,
• solvent,
• compound,
• gas,
• product,
• coating,
• component,
• liquid,
• chemical,
• constituent,
• acid,
• agent,
• fabric,
• oil,
• solution,
• plant,
• solute,
• fluid,
• antifreeze,
• solid,
• salt,
• bark,