What is another word for standing army?
Pronunciation: [stˈandɪŋ ˈɑːmi] (IPA) 
A standing army refers to a trained force of military personnel that is always ready to act on short notice. The term 'standing army' has been in use for centuries, but over time, different synonyms have emerged. Some of the synonyms for standing army include regular army, active-duty military, peacetime military, and professional army.
Other synonyms for standing army include full-time military, regulars, permanent army, and standing force. These synonyms are often used interchangeably with standing army and highlight the central idea of a ready and trained military force that is permanently maintained by a state or country.
In summary, while the term standing army is commonly used, there are several appropriate synonyms that can be used depending on the context.
