Pronunciation: [sˌə͡ʊ sˈuːn] (IPA) 
The spelling of the phrase "so soon" follows the pronunciation of each individual word. "So" is spelled as /soʊ/ in IPA phonetic transcription, with the "o" representing a diphthong sound that starts as /ɔ/ and ends as /ʊ/. "Soon" is spelled as /suːn/, with the "oo" representing a long "u" sound. Together, "so soon" is pronounced as /soʊ suːn/, meaning quickly or sooner than expected.
The phrase "so soon" is an idiom that describes an event, action, or result occurring quickly or unexpectedly. It conveys the notion of something happening earlier than anticipated or sooner than one might have thought. This phrase is commonly used in conversations and literature to express surprise, disappointment, or disbelief regarding the timing of a particular situation or outcome.
"So soon" often suggests that the occurrence is occurring sooner than anticipated or before one could fully prepare or be ready for it. It can refer to various scenarios, such as the quick passing of time, the rapid arrival of an expected event or person, or even the sudden departure or conclusion of a particular situation. The context in which the phrase is used determines the exact meaning and connotation.
It is worth noting that this expression can be nuanced depending on the tone and emphasis placed on the word "so." For example, emphasizing "so" can emphasize the suddenness or unexpectedness of the event, while stressing "soon" can underscore the early arrival or the disappointing aspect of the timing.
In summary, "so soon" typically indicates an occurrence happening earlier than expected, conveying surprise or disappointment in the timing or quickness of the event or situation.
The word "soon" can be traced back to the Old English word "sōna", deriving from the Proto-Germanic word "*sainaz". This word ultimately evolved from the Proto-Indo-European root "*seh₁i-" which meant "to seek" or "to search for". Over time, "sōna" took on the meaning of "promptly", "immediately", or "without delay". The addition of the word "so" intensifies the meaning of "soon", creating the phrase "so soon" to convey the notion of something happening quickly or unexpectedly.
