How many words start with MOU?

13, from 5 letters up to 5. All of them are on this page.

What is the highest scoring word that start with MOU?

MOUCH at 12 points in Scrabble, and MOUCH at 14 in Words With Friends, because the two games score the tiles differently.

MOUCH, MOUES, MOULD, MOULS, MOULT, MOUND, MOUNT, MOUPS, MOURN, MOUSE and 3 more on this page.

13 of them: MOUCH, MOUES, MOULD, MOULS, MOULT, MOUND, MOUNT, MOUPS, MOURN, MOUSE and more.

There are 13 of them. The highest scoring is MOUCH at 12 points in Scrabble, and the set averages 8.2.

Most common words first, then the rest A to Z.

The most familiar words on this page and what they mean. Tap any word for its full entry, score and anagrams.

MOUNT verb attach to a support
MOUSE noun any of numerous small rodents typically resembling diminutive rats having pointed snouts and small ears on elongated bodies with slender usually hairless tails
MOUTH noun the opening through which food is taken in and vocalizations emerge
MOUND noun (baseball) the slight elevation on which the pitcher stands
MOULD noun loose soil rich in organic matter
MOUES noun form of MOUE: a disdainful grimace
MOULT noun periodic shedding of the cuticle in arthropods or the outer skin in reptiles
MOURN verb feel sadness
MOUSY adjective quiet and timid and ineffectual

Definitions from Open English WordNet, CC BY 4.0.

All of them: Word lists.