Work up
Work up verb - To produce or bring about especially by long or repeated effort.
Usage example: spent years working up a period novel that was historically accurate in every detail
Work out
Work out verb - To produce or bring about especially by long or repeated effort.
Usage example: worked out a compromise between the warring factions
Cite this Source
Work out and Work up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/work_up/work_out
Work up & Work out. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/work_up/work_out>.
Work out or Work up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/work_up/work_out.
Google Ngram Viewer shows how "work up" and "work out" have occurred on timeline