Functioning
Functioning noun - Process or manner of functioning or operating.
Trouble and functioning are semantically related. In some cases you can use "Trouble" instead a noun "Functioning".
Trouble
Trouble noun - An abnormal state that disrupts a plant's or animal's normal bodily functioning.
Functioning and trouble are semantically related. Sometimes you can use "Functioning" instead a noun "Trouble".
Both words in one sentence
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Transgenic species have escaped from labs, causing trouble for people in cities and functioning as invasive species.
Source: Gaia's Lament - He was still able to kill them even with barely functioning senses, but did have a little more trouble than usual.
Source: Temporary Blindness - The suspect has trouble with lasting relationships, and is possibly a high-functioning alcoholic, with alcohol being used as a trigger in his crimes.
Source: The Profiler
Cite this Source
Trouble and Functioning. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/functioning/trouble
Functioning & Trouble. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/functioning/trouble>.
Trouble or Functioning. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/functioning/trouble.
Google Ngram Viewer shows how "functioning" and "trouble" have occurred on timeline