Diehard
Square
Square noun - (geometry) a plane rectangle with four equal sides and four right angles; a four-sided regular polygon.
Diehard and square are semantically related in old-fashioned topic. Sometimes you can use "Diehard" instead the word "Square" as a noun or an adjective, if it concerns topics such as conservative, conventional, fogey.
Mutual synonyms
Cite this Source
Square and Diehard. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/diehard/square
Diehard & Square. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/diehard/square>.
Square or Diehard. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/diehard/square.
Google Ngram Viewer shows how "diehard" and "square" have occurred on timeline