Concern
Mutual synonyms
Common collocations
Both words in one sentence
- And when those weren't a large concern for the US Navy (e.g., off the coast of Lebanon or the first Gulf War, where the 16-inch gunnery of Iowa-class battleships proved very useful), they were still impractical for being extremely expensive to operate and manpower-intensive.
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The Spook: Kitridge in the first film has a nice monologue about how all the IMF agents are trained to be ghosts, such that even if they cut them off from agency support they can still operate with little concern.
Source: Film / Mission: Impossible -
However, Uranium enrichment turbines can simply be run longer to create weapons grade Uranium (there are reactors that operate on non-enriched Uranium eliminating that concern) and some designs of reactor naturally produce weapons grade Plutonium.
Source: Just Think of the Potential
Cite this Source
Operate and Concern. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/concern/operate
Concern & Operate. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/concern/operate>.
Operate or Concern. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/concern/operate.
Google Ngram Viewer shows how "concern" and "operate" have occurred on timeline