Yes. MUX is a valid word.
MUX is valid in the North American word list used for the Scrabble board game and other crossword tile games.
MUX is in the NASPA Word List 2023 (NWL2023), the North American list that Tileside uses for challenges and the one used in club and tournament play.
About MUX
MUX means to send several signals over a single channel at once, short for multiplex; its forms include MUXED, MUXES and MUXING. MUX uses the M, a U and the X, so it is worth 12 before any bonus, and it is a good way to play an awkward U. It sounds like a computer term because it is one: short for multiplex, sending several signals down one line at once.
Settle the next one at the table: score your game free in Tileside →
MUX scores 12 points
Before any bonus squares: M 3 + U 1 + X 8 = 12. On a double-word square that's 24, on a triple-word 36, and every letter bonus under one of these tiles is applied first.
Example: MUX as the first play
Later in the game, put the X on a 3L square and MUX is worth 28 before any word bonus.
Longer words from MUX
Change one tile
Swap any one letter of MUX and these are still words:
Same letters, other words
No other word in the list uses exactly the letters M, U and X.
Memory tip
MUX is short for multiplex: sending several signals down one line. Picture many messages mixed into one: MUX.
On these lists
Check words at the table, free
Tileside keeps score, checks words like this one during a challenge, tracks the tiles left in the bag and times turns. It runs in your phone's browser with no account and works offline.
Tileside checks words against the North American list, the NASPA Word List 2023. Your group's chosen dictionary always wins.
Word list: NASPA Word List 2023, used under license. NASPA Word List 2023 Edition © NASPA 2023. The copy included in this app is licensed for personal use. You may not use it for any commercial purposes.
Works with the Scrabble board game, played at the table. Tileside is an independent product, not affiliated with or endorsed by the makers of Scrabble.