DictionaryLookup returns dictionary words that match a pattern.

In a pattern, ___ stands for any sequence of zero or more letters.

This returns dictionary words that start with “a”, followed by zero or more letters, followed by “z”:

Patterns can contain any combination of letters and blank sequences, including more than one blank sequence.

This returns words that contain “kk” somewhere in them:

Are there any words that contain all of the vowels in sequence? Use DictionaryLookup to find out:

Here are the words that contain the letters of “Stephen” in order, starting with “s” and ending with “n”:

If a named pattern like x_ occurs more than once in a pattern, every occurrence has to match the same letters. This pattern matches words that start and end with the same three letters:

Find words that repeat the same sequence of letters twice: