Billions of
Countless and billions of are semantically related. In some cases you can use "Countless" instead an adjective phrase "Billions of".
Countless
Countless adjective - Too many to be counted.
Billions of and countless are semantically related. Sometimes you can use "Billions of" instead an adjective "Countless".
Mutual synonyms
Related pairs
- many and billions of
- many and countless
- innumerable and billions of
- innumerable and countless
- abundant and billions of
- abundant and countless
- profuse and billions of
- profuse and countless
- copious and billions of
- copious and countless
- multifarious and billions of
- multifarious and countless
- several and billions of
- several and countless
Both terms in one sentence
- There're countless of billions of years to test them, so there's hardly any hurry.
Source: Living Forever Is Awesome - A civil war between the Metarex and Tsali the Ultimate Weapon has decimated countless worlds and murdered billions of people.
Source: Crapsack World / Fan Fic -
Similarly, there was also a Sixth Doctor story from Doctor Who Magazine in which the Time Lords say they don't mind countless deaths over billions of years, if it means the Cybermen can eventually Ascend to a Higher Plane of Existence.
Cite this Source
Countless and Billions of. (2016). Retrieved 2026, July 31, from https://thesaurus.plus/related/billions_of/countless
Billions of & Countless. N.p., 2016. Web. 31 Jul. 2026. <https://thesaurus.plus/related/billions_of/countless>.
Countless or Billions of. 2016. Accessed July 31, 2026. https://thesaurus.plus/related/billions_of/countless.
Google Ngram Viewer shows how "billions of" and "countless" have occurred on timeline