DictionaryLookup

DictionaryLookup[patt] finds all words in an English dictionary that match the string pattern patt.

DictionaryLookup[patt,n] gives only the first n words found.

DictionaryLookup[{"lang",patt}] finds words in the language specified by lang.

Examples

Find words matching a pattern:

DictionaryLookup["test*"]
(* {"test", "testament", "testify", ...} *)

Find words in a specific language:

DictionaryLookup[{"German", "Hund*"}]
(* {"Hund", "Hunde", ...} *)

Please visit the official Wolfram Language Reference for more details.