The phrase "thing the past" may seem peculiar in its spelling, but it actually follows the rules of English pronunciation. The sound represented by the letter "th" can either be voiced (like the word "this") or voiceless (like the word "thin"). In this phrase, the "th" sound is voiceless, which is why it is spelled with the letters "th" and not "dh." Similarly, the "g" in "thing" is also pronounced as a voiceless sound, hence the "gh" spelling. So, even though it looks odd, the spelling of "thing the past" makes perfect sense.
"Thing the past" is a colloquial expression used to refer to an event, experience, or situation that once occurred but is no longer relevant or significant in the present moment. This phrase denotes something that has happened in the past and holds no particular significance or relevance in current circumstances.
The term "thing" implies anything that is identifiable or describable, such as an occurrence, a happening, or even a personal matter. It encompasses a wide range of events or situations that have transpired, may have had an impact at the time they occurred, but are no longer considered important or influential.
"The past," in this context, refers to a time period that has already occurred and is now concluded. It signifies the history or sequence of events that have taken place before the present moment. The past is considered as something that is fixed and cannot be changed, making the reference to "thing the past" a way of acknowledging that it is immutable and should not have a bearing on current circumstances.
Overall, the phrase "thing the past" is a casual way of describing a past event or situation that is no longer significant or relevant to the current time period. It emphasizes the idea of letting go of past experiences and focusing on the present moment instead.