murmur   
bitsika
a whisper, a conversation carried on in a low voice; a soft murmuring sound. [Mal. Bisik.] [Richardson 1885]
migoangoana
to murmur, as water falling, or as people coming from a building [Richardson 1885]
mimonjomonjo
to murmur in discontent [Hallanger 1973]
murmurer son mécontentement [Hallanger 1974]
minemonemona
to murmur, to grumble. [Richardson 1885]
mingonona
to mutter, to grumble, to murmur [Richardson 1885]
mingonongonona
to mutter, to grumble, to murmur [Rajemisa 1985]