RichThesaurus
optionally
optionally
synonyms
facultatively
without being asked
by choice
voluntarily
willingly
at one’s discretion
on one’s own
freely
spontaneously
intentionally
of one’s own accord
deliberately
by preference
without prompting
with all one’s heart
on one’s own initiative
unnecessarily
directly
unhinderedly
alone
uncomplicatedly
conveniently
unrestrictedly
unobstructedly
fully
free
free of charge
unimpededly
unaffectedly
shamelessly
straightforwardly
suitably
gratuitously
appropriately
away
easily
plainly
straight from the shoulder
explicitly
openly
independently
readily
straight
forthrightly
coolly
gratis
comfortably
naturally
fittingly
no sweat
more synonyms
optionally
antonyms
mandatorily
obligatorily
nonoptionally
involuntarily
forced
obligatory