Talk indistinctly, usually in a low voice
English: mumble, mutter, maunder, mussitate
Bahasa: berbisik, bergumam, mengombinasikan, kumat, menggumam, memberengut, ceracau, berkecumik
Less certain link between this word and this sense.
menggonyehBahasa Indonesia
maunder, mumble, mussitate, mutter