Pay up
Pay up verb - To give what is owed for.
Pay back
Pay back verb - Act or give recompense in recognition of someone's behavior or actions.
Mutual synonyms
Cite this Source
Pay back and Pay up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/pay_up/pay_back
Pay up & Pay back. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/pay_up/pay_back>.
Pay back or Pay up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/pay_up/pay_back.
Google Ngram Viewer shows how "pay up" and "pay back" have occurred on timeline