1) Bluffness 2) Candidness 3) Candor 4) Candour 5) Forthrightness 6) Honesty 7) Outspokenness 8) Sincerity 9) Unreserve 10) Veracity 1) Bluntness 2) Candidness 3) Candor 4) Candour 5) Directness 6) Forthrightness 7) Honestness 8) Honesty 9) Innocence 10) Naivety 11) Openness 12) Outspokenness 13) Plainness of speech 14) Simplicity 15) Sincerity 16) Straightforwardness 17) Truthfulness 
• (n.) The quality of being frank; candor; openess; ingenuousness; fairness; liberality.
Frank'ness noun The quality of being frank; candor; openess; ingenuousness; fairness; liberality. 
[n] - the trait of being blunt and outspoken
noun the trait of being blunt and outspoken
plainness of speech; candor; openness.