General Descriptions:
* Resonant: This emphasizes the richness and fullness of the voice.
* Sonorous: This suggests a pleasingly deep and full sound.
* Full-bodied: This emphasizes the depth and richness of the voice.
* Rich: This emphasizes the quality and pleasing sound of the voice.
* Grave: This suggests a serious and somber tone.
More Specific Descriptions:
* Baritone: This is a specific vocal range for men, often associated with deep, resonant voices.
* Bass: This is another specific vocal range for men, often associated with even deeper and more powerful voices than baritones.
* Hollow: This describes a voice that sounds empty or cavernous.
* Rumbling: This describes a voice that sounds like a low, deep growl.
* Thunderous: This describes a voice that is very loud and deep, almost like thunder.
Figurative Language:
* Velvet: This metaphor suggests a smooth, rich, and luxurious sound.
* Chocolate: This metaphor suggests a deep, rich, and comforting sound.
The best word to use will depend on the context and the specific qualities of the voice you are describing.