Relentless
Relentless adjective - Showing no signs of slackening or yielding in one's purpose.
Rock hard and relentless are semantically related. In some cases you can use "Rock hard" instead an adjective "Relentless".
Nearby Word: relentlessly
Rock hard
Relentless and rock hard are semantically related. Sometimes you can use "Relentless" instead an adjective phrase "Rock hard".
Mutual synonyms
Related pairs
- firm and relentless
- firm and rock hard
- determined and relentless
- determined and rock hard
- rigid and relentless
- rigid and rock hard
- stubborn and relentless
- stubborn and rock hard
- unyielding and relentless
- unyielding and rock hard
- immovable and relentless
- immovable and rock hard
- hard and relentless
- hard and rock hard
Cite this Source
Rock hard and Relentless. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/relentless/rock_hard
Relentless & Rock hard. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/relentless/rock_hard>.
Rock hard or Relentless. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/relentless/rock_hard.
Google Ngram Viewer shows how "relentless" and "rock hard" have occurred on timeline