Irrelevant
Irrelevant adjective - Not having anything to do with the matter at hand.
Not related and irrelevant are semantically related In some cases you can use "Not related" instead an adjective "Irrelevant".
Not related
Irrelevant and not related are semantically related in independent topic. You can use "Irrelevant" instead an adjective phrase "Not related".
Cite this Source
Not related and Irrelevant. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/irrelevant/not_related
Irrelevant & Not related. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/irrelevant/not_related>.
Not related or Irrelevant. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/irrelevant/not_related.
Google Ngram Viewer shows how "irrelevant" and "not related" have occurred on timeline