Blue water
Deep and blue water are semantically related. In some cases you can use "Deep" instead a noun phrase "Blue water".
Deep
Deep noun - The whole body of salt water that covers nearly three-fourths of the earth.
Usage example: sailors exploring the farther reaches of the briny deep
Cite this Source
Deep and Blue water. (2017). Retrieved 2026, July 30, from https://thesaurus.plus/related/blue_water/deep
Blue water & Deep. N.p., 2017. Web. 30 Jul. 2026. <https://thesaurus.plus/related/blue_water/deep>.
Deep or Blue water. 2017. Accessed July 30, 2026. https://thesaurus.plus/related/blue_water/deep.
Google Ngram Viewer shows how "blue water" and "deep" have occurred on timeline