Upper case
Uppercase letter and upper case are semantically related. In some cases you can use "Uppercase letter" instead a noun phrase "Upper case".
Uppercase letter
Upper case and uppercase letter are semantically related. You can use "Upper case" instead a noun "Uppercase letter".
Mutual synonyms
Cite this Source
Uppercase letter and Upper case. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/upper_case/uppercase_letter
Upper case & Uppercase letter. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/upper_case/uppercase_letter>.
Uppercase letter or Upper case. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/upper_case/uppercase_letter.
Google Ngram Viewer shows how "upper case" and "uppercase letter" have occurred on timeline