Arduous
Problem
Problem noun - Something that requires thought and skill for resolution.
Arduous and problem are semantically related. Sometimes you can use "Arduous" instead an adjective "Problem".
Nearby Words: problematic, problematical
Mutual synonyms
Both words in one sentence
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When informed that he can either take his father's position or let every universe in reality fall apart, unable to get over his daddy issues Lucifer begins an extremely arduous quest to fix the problem some other way.
Source: Suicidal Cosmic Temper Tantrum
Cite this Source
Problem and Arduous. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/arduous/problem
Arduous & Problem. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/arduous/problem>.
Problem or Arduous. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/arduous/problem.
Google Ngram Viewer shows how "arduous" and "problem" have occurred on timeline