Synonym: heavy. Similar words: porous, amorous, odorous, decorous, timorous, humorous, rigorous, vigorous. Meaning: ['sɑnərəs /'sɒnərəs] 
adj. full and loud and deep.
adj. full and loud and deep. 
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31. In a hush, its sound appears all the more sonorous and strong.
32. He was chosen as a broadcaster for his round and sonorous voice.
33. His firm, sonorous, and unexpected voice made every one start.
More similar words: porous, amorous, odorous, decorous, timorous, humorous, rigorous, vigorous, dolorous, glamorous, clamorous, herbivorous, omnivorous, vigorously, malodorous, carnivorous, insectivorous, monotonously, monotonous, borough, thorough, factor out, thoroughly, rouse, gluttonous, autonomous, arouse, cacophonous, onerous, aroused.