naiveness
naivete, naiveness
quality
artlessness
credulousness
gullibility
ingenuousness
innocence
naturalness
simple mindedness
simpleness
simplicity
amiability
candor
conscientiousness
guilelessness
impulsiveness
inexperience
light-heartedness
openness
perspicuity
plainness
playfulness
prattle
single-mindedness
spontaneity
straightforwardness
trustfulness
unaffectedness
unworldliness
waywardness