How many words start with MAS?

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

What is the highest scoring word that start with MAS?

MASHY at 13 points in Scrabble, and MASHY at 12 in Words With Friends, because the two games score the tiles differently.

MASAS, MASED, MASER, MASES, MASHY, MASKS, MASON, MASSA, MASSE, MASSY and 3 more on this page.

13 of them: MASAS, MASED, MASER, MASES, MASHY, MASKS, MASON, MASSA, MASSE, MASSY and more.

There are 13 of them. The highest scoring is MASHY at 13 points in Scrabble, and the set averages 8.3.

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.

MASON noun a craftsman who works with stone or brick
MASKS verb form of MASK: hide under a false appearance
MASER noun an acronym for microwave amplification by stimulated emission of radiation
MASSE noun a shot in billiards made by hitting the cue ball with the cue held nearly vertically
MASTS noun form of MAST: a vertical spar for supporting sails

Definitions from Open English WordNet, CC BY 4.0.

All of them: Word lists.