How many words start with AU?

522, ranging from 3 to 15 letters.

What is the best scoring word that starts with AU?

AUTOCHTHONOUSLY, worth 26 points in Scrabble.

AUTOCHTHONOUSLY and AUTOGRAPHICALLY, at 15 letters.

522 words begin with AU, and AUTOCHTHONOUSLY scores the most at 26 points.

Showing the highest-scoring of 522 words. The pages linked below split the rest into smaller lists.

The dictionary contains 522 words that begin with AU — set out here by length.

Lengths span 3 to 15. The middle of that range is where the words are: 91 of them are 10 letters long.

If you are playing for score, AUTOCHTHONOUSLY at 26 points is the pick. Words With Friends scores it differently and prefers AUTOGRAPHICALLY at 30.

The full 15 letters are used by AUTOCHTHONOUSLY, AUTOGRAPHICALLY and AUTOMATIZATIONS.

If you need a narrower cut, the pages linked below split this set by letter and by length.

autoradiography: producing a radiograph by means of the radiation emitted from the specimen being photographed
authoritatively: in an authoritative and magisterial manner
autobiographic: relating to or in the style of an autobiography
autobiographer: someone who writes their own biography
autocratically: in an autocratic manner

How many words start with AU?: 522, ranging from 3 to 15 letters.
What is the best scoring word that starts with AU?: AUTOCHTHONOUSLY, worth 26 points in Scrabble.
What is the longest word that starts with AU?: AUTOCHTHONOUSLY and AUTOGRAPHICALLY, at 15 letters.