Yes. MU is a valid word.
MU is valid in the North American word list used for the Scrabble board game and other crossword tile games.
MU 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 MU
MU is the twelfth letter of the Greek alphabet, the one scientists use for a micron and for friction. Add a D for MUD, a G for MUG, an M for MUM, an N for MUN or an S for MUS.
Settle the next one at the table: score your game free in Tileside →
MU scores 4 points
Before any bonus squares: M 3 + U 1 = 4. On a double-word square that's 8, on a triple-word 12, and every letter bonus under one of these tiles is applied first.
Example: MU as the first play
Later in the game, put the M on a 3L square and MU is worth 10 before any word bonus.
Hooks: one tile makes a new word
After MU (7):
Place that one tile so it also forms a word in the other direction and both words score.
Longer words from MU
Other forms of MU (1):
- MUSform of MU: the 12th letter of the Greek alphabet
Words that start with MU:
- MUCH(quantifier used with mass nouns) great in quantity or degree or extent
- MUCKremove muck, clear away muck, as in a mine
- MUDSform of MUD: water soaked soil
- MUFFa warm tubular covering for the hands
- MUGG
- MUGSform of MUG: the quantity that can be held in a mug
- MULEhybrid offspring of a male donkey and a female horse
- MULLreflect deeply on a subject
Change one tile
Same letters, other words
These use exactly the letters of MU:
- UMto hesitate or pause in speaking
Add one tile: words from these letters plus one more
MU + A
MU + B
- BUMa person who is deemed to be despicable or contemptible
MU + C
- CUMthe thick white fluid containing spermatozoa that is ejaculated by the male genital tract
MU + E
- EMUany of various systems of units for measuring electricity and magnetism
MU + G
MU + H
- HUMsing with closed lips
MU + L
Memory tip
MU is the Greek letter M. The Greek letters on the list: MU, NU, PI, XI and the longer ones.
On these lists
Other two-letter words starting with M
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. Playing the international (Collins) list? Turn on its 20 extra two-letter words in Setup.
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.