Modifiers matching base:

• portable,
• secure,
• small,
• stable,
• hydrated,
• common,
• weak,
• firm,
• dry,
• nitrogenous,
• polar,
• solid,
• inorganic,
• social,
• flat,
• supporting,
• auxiliary,
• hard,
• lipophilic,
• moving,
• supportive,
• standard,
• underlying,
• level,
• permanent,
• rigid,
• ceramic,
• physical,
• hydrophilic,
• tonic,
• exogenous,
• traditional,
• organic,
• square,
• mild,
• stationary,
• concrete,
• operational,
• vascular,
• optical,
• oily,
• resistant,
• metal,
• culinary,
• inert,
• aqueous,
• sturdy,
• horizontal,
• thick,
• transparent,
• strong,
• suitable,
• heterocyclic,
• fixed,

Simple categories matching rigid:

• surface,
• member,
• frame,
• floor,
• material,
• structure,
• container,
• object,
• tip,
• packing,
• macromolecule,
• boot,
• vehicle,
• means,
• fastener,
• shape,
• item,
• plant,
• package,
• substrate,
• part,
• construction,
• strip,
• luggage,
• solid,
• resin,
• body,
• hanger,
• thermoplastic,
• display,
• mineral,
• support,
• medium,
• organ,
• molecule,
• monomer,
• bottle,
• lining,
• transformation,
• architecture,
• appendage,
• obstruction,
• cutoff,
• base,
• instrument,
• mechanism,
• devices,
• paper,
• food,
• cloth,
• matter,
• deposit,
• filler,
• space,
• particle,
• feature,
• foam,
• connection,
• portion,
• plate,
• wall,
• hitch,
• sphere,
• obstacle,
• fixture,
• group,
• pipe,
• airfoil,
• entity,
• tool,
• casing,
• sorbent,
• deck,
• covering,
• measure,
• metal,
• web,
• document,
• article,
• cylinder,
• alteration,
• sheet,
• foundation,
• polymer,
• transparency,
• ground,
• splint,
• textile,
• instrumentation,
• product,
• fixing,
• form,
• movement,
• appliance,
• rock,
• pavement,
• organs,
• tube,
• layer,
• dressing,
• fibre,
• watercraft,
• device,
• adhesive,
• shaft,
• unit,
• cement,
• representation,
• coil,
• post,
• gel,
• motion,
• cover,
• element,
• aggregate,
• thread,
• system,
• implement,
• barrier,
• profile,
• fiber,
• change,
• component,
• stick,
• substance,
• insulation,
• tissue,
• bed,
• block,
• protein,
• plastic,
• piece,
• sector,
• finish,
• rod,
• carrier,
• panel,
• connector,
• class,
• case,
• boundary,
• armour,
• tubing,
• matrix,
• fabric,