Modifiers matching plastic:

• impermeable,
• difficult,
• inert,
• common,
• thermosetting,
• hard,
• translucent,
• flexible,
• viscous,
• thermal,
• rigid,
• stable,
• sensitive,
• traditional,
• brittle,
• slippery,
• liquid,
• suitable,
• corrosive,
• washable,
• new,
• modern,
• synthetic,
• amorphous,
• durable,
• clear,
• resilient,
• solid,
• light,
• useful,
• tough,
• fibrous,
• special,
• commercial,
• technical,
• nonpolar,
• smooth,
• lightweight,
• strong,
• safe,
• heavy,
• brilliant,
• thermoset,
• industrial,
• thick,
• standard,
• colored,
• automotive,
• black,
• biodegradable,
• expanded,
• over,
• basic,
• transparent,
• polar,
• color,
• convenient,
• opaque,
• soft,
• appropriate,
• resistant,
• thin,
• conventional,
• organic,

Simple categories matching polar:

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