Ground zero
Ground zero noun - A thing or place that is of greatest importance to an activity or interest.
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Synonyms for Ground zero
Onset and ground zero are semantically related. In some cases you can use "Onset" instead a noun phrase "Ground zero".
Onset
Onset noun - The point at which something begins.
Usage example: the claim that if you take enough vitamin C at the onset of a cold, you'll often recover faster
Ground zero and onset are semantically related. Sometimes you can use "Ground zero" instead a noun "Onset".
Mutual synonyms
Cite this Source
Onset and Ground zero. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/ground_zero/onset
Ground zero & Onset. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/ground_zero/onset>.
Onset or Ground zero. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/ground_zero/onset.
Google Ngram Viewer shows how "ground zero" and "onset" have occurred on timeline