In Reply to: a few questions for Bahasa experts posted by Shay on Tuesday, 29. January 2008 at 11:51 Bali Time:
imply no - or can say barangkali lain kali = maybe another time.
It is also useful to put off an invitation that you really don't want to accept or that would probably cause a lot of bother if you accepted. Everyone understands it means 'no' but is not impolite.