Costless and Voluntary

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

Voluntary and costless are semantically related. in free topic. In some cases you can use "Voluntary" instead an adjective "Costless".

Nearby Words: cost, costly

Voluntary

Voluntary adjective - Done, made, or given with one's own free will.

Costless and voluntary are semantically related. You can use "Costless" instead an adjective "Voluntary".

Cite this Source
Voluntary and Costless. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/costless/voluntary
Costless & Voluntary. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/costless/voluntary>.
Voluntary or Costless. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/costless/voluntary.
Google Ngram Viewer shows how "costless" and "voluntary" have occurred on timeline