auxiliary
n. countablen. a person or group that provides extra help or support to a larger organization. In grammar, it is a helping verb like 'have' or 'do' that works with a main verb to show tense.
n. an individual or group providing supplementary or additional support to a primary organization or force. In a linguistic context, it refers to a functional word that combines with a lexical verb to express grammatical distinctions such as aspect, mood, or tense.
The hospital hired several auxiliaries to help the nursing staff.
During the busy summer season, the local police department relies on a trained auxiliary to manage traffic near the beach.
While the main fleet engaged the enemy directly, the auxiliary remained in the rear to manage logistics and provide medical support to the wounded sailors.
From Latin auxiliārius (“assistant, ally”), equiv. to auxiliāris (“helping, aiding”), from auxilium (“help, aid”), from augēre (“to increase”).
Often used in the plural when referring to personnel; in grammar, it is frequently paired with 'verb' to form a compound noun.