Which definition best fits the word "traitor"?

The term "traitor" specifically refers to an individual who commits an act of betrayal, particularly in relation to someone’s trust, a cause, or even their country. This betrayal can manifest in various ways, such as sharing confidential information with enemies, abandoning comrades, or working against the interests of a group or nation they were once aligned with. This definition captures the essence of the word "traitor," which inherently involves a breach of loyalty.

The other options present meanings that are contrary to the essence of betrayal. The first choice describes someone who is dependable and trustworthy, while the third suggests an individual who prioritizes their own interests, neither of which aligns with the concept of treachery. The fourth option portrays a positive figure, an inspirational leader, which again does not correlate with the negative implications associated with being a traitor. Therefore, the most accurate and fitting definition of "traitor" is the one that highlights the act of betrayal.