"Is on tail" is an idiomatic expression commonly used in informal language. Although it is not listed as a specific phrase in dictionaries, it can be understood by analyzing its individual components.
The word "is" is the third person singular present tense of the verb "to be," indicating a state of existence or a condition. "On" is a preposition indicating a position or location in relation to another object or subject. Lastly, "tail" refers to the hindmost part of an animal's body, or alternatively, it can be used metaphorically to represent chasing or pursuing someone or something.
When combined, the expression "is on tail" usually suggests that someone is actively or persistently pursuing or chasing after something or someone. It indicates that someone is closely following another person, group, or entity, often in an attempt to keep up with their actions or progress. This pursuit can be either literal or metaphorical, depending on the context.
For example, if someone says, "He is on my tail," it means that someone is closely following or monitoring their actions, attempting to keep up with them or gather information about them. This phrase is commonly seen in situations where there is competition, surveillance, or pursuit, and it highlights the idea of being closely watched or pursued by someone else.
