Extra
Extra adverb - To a great degree.
Unfrequently and extra are semantically related In some cases you can use "Unfrequently" instead an adverb "Extra".
Unfrequently
Extra and unfrequently are semantically related in not often topic. Sometimes you can use "Extra" instead an adverb "Unfrequently".
Mutual synonyms
Cite this Source
Unfrequently and Extra. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/extra/unfrequently
Extra & Unfrequently. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/extra/unfrequently>.
Unfrequently or Extra. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/extra/unfrequently.
Google Ngram Viewer shows how "extra" and "unfrequently" have occurred on timeline