Close to
Close to adverb - (of quantities) imprecise but fairly close to correct.
Functioning and close to are semantically related. In some cases you can use "Functioning" instead an adjective phrase "Close to".
Functioning
Functioning adjective - Being in effective operation.
Close to and functioning are semantically related. Sometimes you can use "Close to" instead an adjective "Functioning".
Both terms in one sentence
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An electron beam that could be considered close to a lightning gun — which would make every functioning vacuum tube in existence a little lightning factory.
Source: Lightning Gun - Also a critical problem for him is that he can't send his gear too close to the Church's headquarters for fear of tripping still functioning high-tech sensors.
Source: Not So Omniscient After All - It should be noted though that Hoffman's performance has been praised by many as being very close to how many people with low-functioning autism act.
Source: Hollywood Autism
Cite this Source
Functioning and Close to. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/close_to/functioning
Close to & Functioning. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/close_to/functioning>.
Functioning or Close to. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/close_to/functioning.
Google Ngram Viewer shows how "close to" and "functioning" have occurred on timeline