At work
At work adjective - On the job.
Efficacious and at work are semantically related. in active topic. In some cases you can use "Efficacious" instead an adjective phrase "At work", when it comes to topics like having movement.
Efficacious
Efficacious adjective - Producing or capable of producing a desired result.
At work and efficacious are semantically related. Sometimes you can use "At work" instead an adjective "Efficacious".
Cite this Source
Efficacious and At work. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/at_work/efficacious
At work & Efficacious. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/at_work/efficacious>.
Efficacious or At work. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/at_work/efficacious.
Google Ngram Viewer shows how "at work" and "efficacious" have occurred on timeline