Pronunciation: [ɡɹˈə͡ʊ dˈɑːk] (IPA) 
The phrase "grow dark" is pronounced /ɡroʊ dɑrk/. The word "grow" is spelled with a silent "w" which makes the "o" sound like an "oh" instead of an "ow". Meanwhile, the word "dark" is spelled phonetically, with the "a" making an "ar" sound like in "car". When we say "grow dark" we mean that the daylight is fading and the sky is becoming darker. This is a common phrase used to describe the onset of evening or nightfall.
The phrase "grow dark" refers to the transition from daylight or a well-lit environment to a state of increasing darkness. It specifically describes the gradual diminishing of light or brightness. When something grows dark, the intensity of the luminous presence diminishes or fades away, causing the surroundings to become less illuminated or visible.
This phrase often implies the natural progression of time during twilight hours, as the sun sets and daylight begins to wane. As darkness grows, shadows become more pronounced, colors become less vibrant, and visibility decreases. Sometimes, "grow dark" can also describe a sudden or dramatic change in illumination, such as when a light source is rapidly extinguished or obstructed.
In a metaphorical sense, "grow dark" can also be used to depict the deterioration or declining nature of a situation or atmosphere. It conveys a sense of impending gloom, bleakness, or uncertainty, as if the metaphorical light slowly fades away, leaving behind a metaphorical darkness.
Overall, "grow dark" captures the transformative process by which a bright or illuminated state gradually deteriorates or fades into darkness, whether it refers to physical light or metaphorical brightness.
The word "grow" originated from the Old English word "grōwan" which means "to increase, thrive, or grow". It is derived from the Proto-Germanic word "grōaną". The word "dark" comes from the Old English word "deorc", which is derived from the Proto-Germanic word "derkaz". When the two words are combined, "grow" and "dark", it forms the phrase "grow dark", which refers to the process of becoming or turning dark.
