IPA: /mɛˈlɪf.lu.əs.li/
KK: /mɛˈlɪf lʊəs li/
In a way that is pleasant to hear, often smooth and sweet in sound.
The singer's voice flowed mellifluously through the concert hall, captivating the audience.
Mellifluously → It is formed from "mel" (from Latin *mel*, meaning honey) and "fluere" (meaning to flow). The word describes a sound that flows like honey, suggesting sweetness and smoothness in tone.
Think of 'honey' ('mel') flowing smoothly ('fluere') — that's why mellifluously means a sound that flows sweetly.