Final answer:
The word 'subordinate' in this sentence refers to a person who is lower in rank or position compared to someone else.
Step-by-step explanation:
In the sentence 'The office manager spoke to her subordinate in a cordial tone,' the word 'subordinate' refers to a person who is lower in rank or position compared to someone else. The office manager is in a higher position than the subordinate, indicating a hierarchical relationship. In this context, 'subordinate' describes the person who is being spoken to by the office manager.