n. Function: adjective
1 having a muffled or reverberating quality FF1C; had a deep hollow gloomy voice FF1E;
Synonyms: cavernous, reverberant, sepulchral
Related Words: echoing, resonant, resounding, reverberating, sounding
Contrasted Words: dead, dull, flat, toneless
2
Synonyms: VAIN 1, empty, idle, nugatory, otiose