Bohemianism
affability
casualness
chumminess
common touch
cordiality
ease
easiness
easygoingness
familiarity
graciousness
homeliness
homeyness
informality
informalness
irregularity
looseness
naturalness
offhandedness
plainness
relaxedness
simplicity
sociability
unaffectedness
unceremoniousness
unconstrainedness
unconstraint
unconventionality
unpretentiousness