Synonyms for Mat (same or very similar meaning)
WordNet sense 1 (a master's degree in teaching):
Master of Arts in Teaching
WordNet sense 2 (the property of having little or no contrast; lacking highlights or gloss):
flatness, matt, matte, lusterlessness, lustrelessness
WordNet sense 3 (mounting consisting of a border or background for a picture):
matting
WordNet sense 4 (sports equipment consisting of a piece of thick padding on the floor for gymnastic sports):
gym mat
WordNet sense 5 (twist together or entwine into a confusing mass):
entangle, snarl, tangle
WordNet sense 6 (change texture so as to become matted and felt-like):
felt, matt-up, felt up, matte up, mat up
WordNet sense 7 (not reflecting light; not glossy):
flat, matted
WordNet sense 8 (emitting or reflecting very little light):
dull
From the ODE community, based on WordNet
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