"Being on tail" is an idiomatic expression that refers to someone closely following or monitoring another person's actions, usually with the intention of uncovering any secrets, observing their behavior, or trying to catch them doing something wrong. This phrase can also be used to describe a situation where someone is being particularly watchful or vigilant, constantly observing someone else's every move.
The phrase "being on tail" is derived from the literal act of tailing or following someone closely, similar to a tailing operation by investigators or surveillance professionals. It implies being discreet, inconspicuous, and discreetly following someone to observe their activities without their knowledge or consent.
This expression is often used in scenarios involving suspicion or distrust, such as when someone suspects their partner of infidelity, an employer monitoring an employee's activities, or an investigator trying to gather evidence. It implies a deliberate and focused effort to keep a close eye on someone, paying attention to their whereabouts, actions, and interactions.
In summary, "being on tail" refers to the act of closely monitoring or following someone's actions, often with the motive of discovering hidden information or watching over them meticulously. It denotes a level of vigilance, secrecy, and suspicion, suggesting an attempt to uncover or observe someone's activities without their awareness.
