Apex
Apex noun - The highest part or point.
Upper limit and apex are semantically related In some cases you can use "Upper limit" instead a noun "Apex".
Upper limit
Upper limit noun - The largest possible quantity.
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Synonyms for Upper limit
Apex and upper limit are semantically related in highest level topic. You can use "Apex" instead a noun phrase "Upper limit".
Mutual synonyms
Cite this Source
Upper limit and Apex. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/apex/upper_limit
Apex & Upper limit. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/apex/upper_limit>.
Upper limit or Apex. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/apex/upper_limit.
Google Ngram Viewer shows how "apex" and "upper limit" have occurred on timeline