How many words start with PAS?

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

What is the highest scoring word that start with PAS?

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

PASEO, PASES, PASHA, PASHM, PASPY, PASSE, PASTA, PASTE, PASTS, PASTY.

10 of them: PASEO, PASES, PASHA, PASHM, PASPY, PASSE, PASTA, PASTE, PASTS, PASTY.

There are 10 of them. The highest scoring is PASHM at 12 points in Scrabble, and the set averages 8.6.

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.

PASTE noun any mixture of a soft and malleable consistency
PASTA noun a dish that contains pasta as its main ingredient
PASEO noun a path set aside for walking
PASES noun form of PAS: (ballet) a step in dancing (especially in classical ballet)
PASHA noun a civil or military authority in Turkey or Egypt
PASSE adjective out of fashion
PASTS noun form of PAST: the time that has elapsed
PASTY noun small meat pie or turnover

Definitions from Open English WordNet, CC BY 4.0.

All of them: Word lists.