(1)speak softly or indistinctly; "She murmured softly to the baby in her arms"
(2)穏やかに、または、不明瞭に話す
(3)talk indistinctly; usually in a low voice
(4)通常低い声で
(5)speak softly; in a low voice
(6)そっと言う
(7)小さな声で