Iron
Iron adjective - Not showing weakness or uncertainty.
Relentless and iron are semantically related in hard topic. In some cases you can use "Relentless" instead an adjective "Iron", when it comes to topics like resist.
Relentless
Relentless adjective - Showing no signs of slackening or yielding in one's purpose.
Iron and relentless are semantically related in resist topic. Sometimes you can use "Iron" instead an adjective "Relentless".
Nearby Word: relentlessly
Mutual synonyms
Both words in one sentence
- Everhard: Then you, and labor, and all of us, will be crushed under the iron heel of a despotism as relentless and terrible as any despotism that has blackened the pages of the history of man.
Source: Literature / The Iron Heel -
If someone is supernaturally relentless, unstoppable, or Made of Iron, then this is the most reliable way to kill them.
Source: Rasputinian Death -
The Iron Hands in The Damnation of Pythos are too icily relentless and mechanical to go berserk, meaning that they manifest their rage in the form of cold ruthlessness and volleys of bolt rounds.
Source: Literature / Horus Heresy
Cite this Source
Relentless and Iron. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/iron/relentless
Iron & Relentless. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/iron/relentless>.
Relentless or Iron. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/iron/relentless.
Google Ngram Viewer shows how "iron" and "relentless" have occurred on timeline