Forthright
Forthright adjective - Free in expressing one's true feelings and opinions.
Usage example: she sometimes was a little too forthright for her own good and ended up saying things that inadvertently offended people
Plain is a synonym for forthright in straightforward topic. In some cases you can use "Plain" instead an adjective "Forthright", when it comes to topics like explicit.
Plain
Plain adjective - Free from all additions or embellishment.
Usage example: just give us the plain facts and none of your snide comments
Forthright is a synonym for plain in candid topic. You can use "Forthright" instead an adjective "Plain", if it concerns topics such as straightforward, straightforward in speech.
Mutual synonyms
Cite this Source
Plain and Forthright. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/forthright/plain
Forthright & Plain. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/forthright/plain>.
Plain or Forthright. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/forthright/plain.
Google Ngram Viewer shows how "forthright" and "plain" have occurred on timeline