Costless
Costless adjective - Not costing or charging anything.
Usage example: maintaining a checking account with the bank is not the costless service that its advertising would have you believe
Expensive
Expensive adjective - Commanding a large price.
Both words in one sentence
- The hot water in The Two Worlds Greasy Spoon is heated by a wood burning boiler despite virtually costless electricity from the nuclear power plant due to the expensive equipment needed to handle the power.
Source: Literature / Between Planets
Cite this Source
Expensive and Costless. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/costless/expensive
Costless & Expensive. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/costless/expensive>.
Expensive or Costless. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/costless/expensive.
Google Ngram Viewer shows how "costless" and "expensive" have occurred on timeline