informal
rural
Bohemian
affable
casual
chummy
cordial
cracker-barrel
degage
easy
easygoing
familiar
free and easy
gracious
haymish
homely
homespun
homey
irregular
loose
natural
offhand
offhanded
plain
relaxed
simple
sociable
unaffected
unassuming
unceremonious
unconstrained
unconventional
unofficial
unstudied
folksier
folksiest
all
blandest
clickthe
freewheeling
frog-like
grandfatherly
high-fashion
marchin'
mid-tempo
minor-key
non-metro
one-note
plinking
pseudoscientific
rah-rah
rockin
troops'
unfrozen
unguessed-at