| noun | a mixture of sulfides that forms when sulfide metal ores are smelted |
| noun | the property of having little or no contrast; lacking highlights or gloss |
| verb | change texture so as to become matted and felt-like “The fabric felted up after several washes” |
| adjective | not reflecting light; not glossy “flat wall paint” |
| flat | adjective | not reflecting light; not glossy |
| lusterless | adjective | lacking luster or shine |
| lustreless | adjective | lacking luster or shine |
| mat | verb | change texture so as to become matted and felt-like |
| matt | adjective | not reflecting light; not glossy |
| matte | adjective | not reflecting light; not glossy |
| felt | noun | a fabric made of compressed matted animal fibers |
| mat | noun | the property of having little or no contrast; lacking highlights or gloss |
| matting | noun | a covering of coarse fabric (usually of straw or hemp) |
| flatness | noun | the property of having little or no contrast; lacking highlights or gloss |
| matt | noun | the property of having little or no contrast; lacking highlights or gloss |
| matte | noun | the property of having little or no contrast; lacking highlights or gloss |