How many words start with OA?

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

What is the highest scoring word that start with OA?

OAKUM at 11 points in Scrabble, and OAKUM at 13 in Words With Friends, because the two games score the tiles differently.

OAKED, OAKEN, OAKER, OAKUM, OARED, OASES, OASIS, OASTS, OATEN, OATER and 2 more on this page.

12 of them: OAKED, OAKEN, OAKER, OAKUM, OARED, OASES, OASIS, OASTS, OATEN, OATER and more.

There are 12 of them. The highest scoring is OAKUM at 11 points in Scrabble, and the set averages 7.2.

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.

OASIS noun a fertile tract in a desert (where the water table approaches the surface)
OAKEN adjective consisting of or made of wood of the oak tree
OAKUM noun loose hemp or jute fiber obtained by unravelling old ropes
OASTS noun form of OAST: a kiln for drying hops
OATEN adjective of or related to or derived from oats
OATHS noun form of OATH: a commitment to tell the truth (especially in a court of law)

Definitions from Open English WordNet, CC BY 4.0.

All of them: Word lists.