Mellifluous

adj.joyful, calmliterary

What it means

Pleasantly smooth, flowing, and musical to hear.

Reach for it when praising a voice, phrase, or sequence of sounds with rich fluidity

Her mellifluous reading gave each line room to settle.

everyday
musical
when varied pitch and pleasing rhythm are enough
not when Musical can refer to skill or structure without describing smooth sound.
warm
melodious
when a sound has a pleasing musical quality
not when Melodious fits tunes and voices broadly but says less about smooth flow.
warm
soothing
when the calming effect on listeners matters most
not when Soothing predicts an effect and may fit a plain voice that is not rich or flowing.
professional
smooth-toned
when plain description of vocal texture is preferable
not when The phrase is less elegant and does not capture mellifluous rhythm.
formal
euphonious
when a sequence of sounds is pleasing as sound
not when Euphonious is technical and can apply to words without warmth or flowing delivery.
literary
dulcet
for sweet, soothing sound in deliberately elevated prose
not when Dulcet can sound archaic or ironic and is rarely natural in everyday praise.
literary
honeyed
for a sweet, persuasive voice
not when Honeyed can imply calculated flattery or insincerity.
literary
liquid
when notes seem to flow seamlessly into one another
not when Liquid is highly figurative and can be obscure outside music criticism.
literary
silken
when smooth texture is used metaphorically for a voice
not when Silken can sound sensual or ornamental and does not imply melody.

mellifluous voice
The actor's mellifluous voice carried easily through the small theater.
mellifluous tones
Mellifluous tones softened the formal opening of the speech.
mellifluous prose
The essay's mellifluous prose never obscures its argument.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.