plain-hearted

plain-hearted (comparative more plain-hearted, superlative most plain-hearted)

1. frank; sincere; honest
   • 1646 (indicated as 1645), John Milton, “Summer”, in Poems of Mr. John Milton, […], London: […] Ruth Raworth for Humphrey Mosely, […], →OCLC:

     For every virtue , every worth , renown'd ;
     Sincere , plain-hearted , hospitable , kind

• plain-heartedness

• “plain-hearted”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.