Modifiers matching acid:

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

Simple categories matching gaseous:

• hydrocarbon,
• alkane,
• odor,
• fuel,
• contamination,
• oxide,
• substance,
• fluid,
• olefin,
• atmosphere,
• reactant,
• body,
• buffer,
• substrate,
• compound,
• component,
• phenomenon,
• carrier,
• molecule,
• anesthetic,
• impurity,
• mass,
• acid,
• alkyne,
• pollutant,
• chemical,
• agent,
• material,
• state,
• monomer,
• form,
• matter,
• contaminant,
• cyanide,
• flow,
• constituent,
• anaesthetic,
• salt,
• fumigant,
• plasma,
• mixture,
• waste,
• sulphide,
• precursor,
• object,
• system,
• medium,