Plummy
What it means
Meaning 1
Rich, rounded, and resonant in sound, especially in a voice.
Reach for it when describing a full, polished vocal quality with an upper-class British association
A plummy contralto voice gave the old ballad depth and warmth.
Meaning 2
Especially desirable, rewarding, or choice.
Reach for it when marking an opportunity or role as unusually attractive
The plummy assignment offered months inside the newly opened archive.