Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb matt-up
1 sense of matt-up
Sense 1
felt, felt up, mat up, matt-up, matte up, matte, mat -- (change texture so as to become matted and felt-like; "The fabric felted up after several washes")
=> change -- (undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night")