Hard
Hard adverb - With great effort or determination.
In perpetuum and hard are semantically related. In some cases you can use "In perpetuum" instead an adverb "Hard".
In perpetuum
Hard and in perpetuum are semantically related. Sometimes you can use "Hard" instead an adverb phrase "In perpetuum".
Cite this Source
In perpetuum and Hard. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/hard/in_perpetuum
Hard & In perpetuum. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/hard/in_perpetuum>.
In perpetuum or Hard. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/hard/in_perpetuum.
Google Ngram Viewer shows how "hard" and "in perpetuum" have occurred on timeline