Pronunciation: [wˈe͡ə θˈɪn] (IPA) 
The phrase "wear thin" may seem counterintuitive in terms of spelling. The word "wear" is pronounced /wɛər/, with a long "e" sound, while "thin" is pronounced /θɪn/, with a short "i" sound. However, "wear thin" is a commonly used idiomatic expression that means something is gradually becoming less effective or accepted. The phrase is spelled as it sounds and is used to describe the diminishing or wearing away of something over time.
The phrase "wear thin" is an idiomatic expression that is used to describe a situation or relationship that becomes less effective, convincing, or satisfying over time, often due to excessive use, repetition, or strain. It signifies a gradual deterioration or loss of patience, interest, or tolerance towards someone or something.
When something "wears thin," it implies that the initial appeal, charm, or strength it possessed is diminishing or eroding with time. This expression can be applied to a wide range of scenarios, including interpersonal relationships, excuses, explanations, promises, arguments, or jokes.
In relationships, "wearing thin" denotes a decline in emotional connection, intimacy, or trust. It suggests that the patience, understanding, or tolerance one had for another person's behavior or actions is starting to diminish, and the actions or words are no longer acceptable or believable. Similarly, when used to describe arguments or explanations, it implies that the justifications or reasoning provided are becoming less persuasive or reliable.
In general, "wear thin" also conveys the notion of a limited capacity to endure or tolerate a certain situation or behavior. It indicates that patience or interest is gradually fading away and that a breaking point or a change is imminent. Thus, when something starts to "wear thin," it serves as a warning that the situation or relationship may become strained, dissolve, or no longer be sustainable in its current state.
The phrase "wear thin" originated from the figurative sense of the word "wear" meaning to diminish or erode gradually over time. In this context, "thin" refers to becoming less substantial or strong. The etymology of "wear" can be traced back to the Old English word "werian", which meant "to carry" or "to have on one's person". Over time, it developed additional meanings related to usage and endurance. The combination of "wear" and "thin" came into use in the English language during the 17th century, implying the gradual wearing down or diminishing of something until it becomes weak, ineffective, or no longer viable.
