- Ensure that you have the Maplex Label Engine enabled and that you have an abbreviation dictionary either created or loaded.
 - On the Labeling toolbar, click Labeling > Abbreviation Dictionaries.
 - Click the Dictionary Name drop-down arrow and choose a dictionary.
 - Click Add Row.
 - Type a word that you want to abbreviate. If you want to abbreviate a group of words, such as Post Office, enclose the words in double quotation marks.
 - Type an abbreviation for the word. If you want to use more than one abbreviation, separate them with a space. If your abbreviation contains a space or nonalphabetical characters, enclose the abbreviation in double quotation marks.
 - Click in the Type column and choose the type of abbreviation you want to use from the drop-down list.
 - Repeat steps 3–7 for each word you want to abbreviate.
 - Click OK.