MHR is not a word, but unscramble MHR and 1 word appear: the best is HM at 7 points. 3 letters, all of them consonants.
M34H43R1
Per tile: Scrabble value, Words With Friends in blue where different.
Counting the words from MHR by length: 1 with 2 letters. The longest answer has 2 letters.
There is a single one of the 2-letter words made with MHR letters: HM, 7 points.
None of the three games accepts MHR itself. Its letters still make 1 playable word, split by game below.
| Game | Scrabble US | Scrabble UK | Words With Friends* |
|---|---|---|---|
| MHR itself | No | No | No |
| Answers accepted (of 1) | 1 | 1 | 1 |
* From the list Words With Friends was built on; the game itself can differ.
Every game here accepts the answer.