Modifiers matching membrane:

• waterproof,
• thin,
• intact,
• active,
• biological,
• logical,
• epithelial,
• warm,
• excitable,
• nonporous,
• continuous,
• flexible,
• protective,
• elastic,
• imperforate,
• porous,
• collagenous,
• impervious,
• metallic,
• synthetic,
• refractory,
• pliable,
• mucous,
• resonant,
• vascular,
• proteinaceous,
• heterogeneous,
• intracellular,
• internal,
• permeable,
• mucosal,
• inorganic,
• impermeable,
• circular,
• sensitive,
• moist,
• biologic,
• macromolecular,
• thick,
• cellular,
• homogeneous,
• natural,
• multicellular,
• extracellular,
• fetal,

Simple categories matching flexible:

• material,
• heater,
• thermoplastic,
• object,
• means,
• pattern,
• system,
• resin,
• polyamide,
• surface,
• bag,
• sack,
• structure,
• membrane,
• substrate,
• quantity,
• support,
• aggregate,
• part,
• wire,
• article,
• thing,
• item,
• connector,
• sign,
• endoscope,
• adhesive,
• appendage,
• dimension,
• pavement,
• strategy,
• trait,
• tape,
• necklace,
• fabric,
• beam,
• display,
• foil,
• stuff,
• plate,
• component,
• tissue,
• tool,
• instrument,
• seal,
• packaging,
• covering,
• compound,
• pad,
• web,
• sheeting,
• clothing,
• paving,
• macromolecule,
• pipe,
• tube,
• linkage,
• cords,
• sheet,
• bond,
• agent,
• complex,
• alloy,
• sensor,
• foam,
• cylinder,
• joint,
• container,
• diaphragm,
• body,
• topology,
• rod,
• track,
• area,
• insulation,
• case,
• vehicle,
• assembly,
• mesh,
• copolymer,
• portion,
• construction,
• package,
• wall,
• chain,
• protein,
• device,
• disclosure,
• tree,
• machine,
• norm,
• network,
• practice,
• group,
• cloth,
• unit,
• filler,
• section,
• film,
• absorber,
• pitch,
• scopes,
• hose,
• marker,
• arrangement,
• riser,
• band,
• medium,
• line,
• conduit,
• member,
• species,
• sealant,
• organism,
• relationship,
• elastomer,
• disk,
• barrier,
• airline,
• panel,
• product,
• wood,
• property,
• weapon,
• tubing,
• attachment,
• mounting,
• equipment,
• glove,
• particle,
• coupling,
• glue,
• plant,
• footwear,
• thread,
• metal,
• substance,
• mechanism,
• strip,
• shape,
• facility,
• strap,
• tongue,
• receptacle,
• strand,
• sector,
• connection,
• loop,
• duct,
• composition,
• solid,
• hardware,
• molecule,
• offering,
• cable,
• polymer,
• toy,
• expense,
• hardwood,
• location,
• form,
• residue,
• caulk,
• aircraft,
• breakage,
• fiber,
• arms,
• conductor,
• layer,
• cord,
• plastic,