forthright vs plain-dealing

forthright

adv
  • Swiftly. 

  • At once, forthwith. 

  • Expressly, frankly, unhesitatingly. 

adj
  • Markedly simple. 

  • Straightforward; not evasive; candid and direct. 

  • Fixed; settled; decided. 

  • Frank, outspoken. 

plain-dealing

How often have the words forthright and plain-dealing occurred in a corpus of books? (source: Google Ngram Viewer )