Alphameric is a word that refers to something that contains both letters and numbers, such as a password or a code. However, there are several synonyms for the word alphameric that are more commonly used. Some of these synonyms include alphanumeric, which is a combination of the words alphabet and numeric, and which is often used to describe computer programming languages. Other synonyms include mixed character, which is often used to describe passwords or codes that contain a mixture of letters, numbers, and symbols, as well as alphanumeric code, which is used to describe codes that are made up of both letters and numbers.