Contributed
Voluntary and contributed are semantically related. In some cases you can use "Voluntary" instead an adjective "Contributed".
Voluntary
Voluntary adjective - Done, made, or given with one's own free will.
Contributed and voluntary are semantically related. Sometimes you can use "Contributed" instead an adjective "Voluntary".
Mutual synonyms
Cite this Source
Voluntary and Contributed. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/contributed/voluntary
Contributed & Voluntary. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/contributed/voluntary>.
Voluntary or Contributed. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/contributed/voluntary.
Google Ngram Viewer shows how "contributed" and "voluntary" have occurred on timeline