ultroneously
voluntarily
spontaneously
unforcedly
voluntarity
semivoluntary
voluntariness
unvolitioned
voluntary work
volunteer
secundum naturam
honorary
au naturel
acceptive
unformally
en famille
acceptant
uncompelled
self-imposed
off-the-record
optionally
make free with
insecurely
facultative
automatism
elective
spur-of-the-moment
wantedly
bain
nonvoluntary
provisionary
parakinesis
unreluctantly
will-less
liberally
semireflex
inderivatively
provisionally
nonvoluntarily
jump before one is pushed
unrefusingly
accord
amateurly
nonforced
with pleasure
amateurishly
throw
spontaneity
for the moment
interimly