Concentrate
Concentrate verb - To increase the amount of (a substance in a mixture) by removing other substances.
Open up is an antonym for concentrate.
Open up
Open up verb - Cause to open or to become open.
Both terms in one sentence
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His good looks are useful when interviewing women, who tend to open up more to him than his more average-looking colleagues, though it sometimes backfires when female witnesses get so Distracted by the Sexy that they can't concentrate on their statements.
Source: Fair Cop
Cite this Source
Open up and Concentrate. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/concentrate/open_up
Concentrate & Open up. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/concentrate/open_up>.
Open up or Concentrate. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/concentrate/open_up.
Google Ngram Viewer shows how "concentrate" and "open up" have occurred on timeline