Modifiers matching metabolite:

• active,
• secondary,
• antibacterial,
• ionic,
• normal,
• toxic,
• aromatic,
• primary,
• complex,
• noxious,
• intermediate,
• critical,
• important,
• soluble,
• inorganic,
• key,
• energetic,
• inhibitory,
• insoluble,
• volatile,
• small,
• polar,
• special,
• essential,
• endogenous,
• cytotoxic,
• antimicrobial,
• organic,
• reactive,
• hydrophilic,
• cellular,
• hazardous,
• nonspecific,
• undesirable,
• common,
• acidic,
• useful,
• lipophilic,
• single,
• major,
• urinary,
• abundant,
• natural,
• fungal,
• acid,
• chemical,
• nonpolar,
• harmless,
• animal,
• valuable,

Simple categories matching polar:

• group,
• mammal,
• compound,
• protein,
• moiety,
• metal,
• rubber,
• reagent,
• solvent,
• structure,
• monomer,
• radical,
• substance,
• solid,
• fluid,
• bird,
• nutrient,
• elastomer,
• particle,
• ligand,
• plastic,
• residue,
• unit,
• molecule,
• material,
• chemical,
• constituent,
• substrate,
• fraction,
• liquid,
• component,
• fauna,
• base,
• adhesive,
• lubricant,
• fiber,
• impurity,
• oil,
• intermediate,
• portion,
• diluent,
• surface,
• metabolite,
• sorbent,
• hormone,
• bond,
• medium,
• resin,
• reactant,
• polymer,
• atom,
• contaminant,
• lipid,
• contamination,
• solute,
• pesticide,
• gas,
• volatile,
• drug,
• organism,
• region,
• dielectric,
• animal,
• activator,
• derivative,
• insulator,
• macromolecule,