Functioning
Functioning adjective - Being in effective operation.
Usage example: looked for a functioning washing machine, but the few that weren't broken were in use
Nonfunctional is an antonym for functioning.
Nonfunctional
Nonfunctional adjective - Not being in working order.
Usage example: that gas pump is nonfunctional, which is the reason for the plastic bag over the nozzle
Functioning is an antonym for nonfunctional.
Both words in one sentence
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The all-famous Tyrannosaurus rex has only two functioning fingers (with a residual nonfunctional third finger) on their forelimbs and three clawed toes on their hind feet.
Source: Four-Fingered Hands
Cite this Source
Nonfunctional and Functioning. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/functioning/nonfunctional
Functioning & Nonfunctional. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/functioning/nonfunctional>.
Nonfunctional or Functioning. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/functioning/nonfunctional.
Google Ngram Viewer shows how "functioning" and "nonfunctional" have occurred on timeline