Problem
Problem noun - Something that requires thought and skill for resolution.
Tough one and problem are semantically related. In some cases you can use "Tough one" instead a noun "Problem".
Nearby Words: problematic, problematical
Tough one
Mutual synonyms
Cite this Source
Tough one and Problem. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/problem/tough_one
Problem & Tough one. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/problem/tough_one>.
Tough one or Problem. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/problem/tough_one.
Google Ngram Viewer shows how "problem" and "tough one" have occurred on timeline