Difficult
Difficult adjective - Requiring considerable physical or mental effort.
Vain and difficult are semantically related. In some cases you can use "Vain" instead an adjective "Difficult".
Nearby Word: difficulty
Both words in one sentence
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It's difficult to feel sympathy for the monster he's become, but you might just pity the idealistic Zouken Makiri, who kept seeking immortality so that the woman he loved wouldn't have died in vain.
Source: Alas, Poor Villain
Cite this Source
Vain and Difficult. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/difficult/vain
Difficult & Vain. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/difficult/vain>.
Vain or Difficult. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/difficult/vain.
Google Ngram Viewer shows how "difficult" and "vain" have occurred on timeline