>Pleasingly smooth and musical to hear (about sound)
>Having a smooth rich flow
>Filled with something (such as honey) that sweetens
In Latin, mel means “honey” and fluere means “to flow.”
Example
>A rich, mellifluous voice that gets her a lot of work in radio and TV commercials
>is songs are as peppy and mellifluous as his persona is honeyed and nonthreatening.