Close study
Preoccupation and close study are semantically related. in deep thinking topic. In some cases you can use "Preoccupation" instead a noun phrase "Close study".
Preoccupation
Preoccupation noun - Something about which one is constantly thinking or concerned.
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Synonyms for Preoccupation
Close study and preoccupation are semantically related. You can use "Close study" instead a noun "Preoccupation".
Mutual synonyms
Cite this Source
Preoccupation and Close study. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/close_study/preoccupation
Close study & Preoccupation. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/close_study/preoccupation>.
Preoccupation or Close study. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/close_study/preoccupation.
Google Ngram Viewer shows how "close study" and "preoccupation" have occurred on timeline