deepen

Verb

• become deeper in tone
  • His voice began to change when he was 12 years old
    
  • Her voice deepened when she whispered the password
    

• make deeper
  • They deepened the lake so that bigger pleasure boats could use it
    

• become more intense
  • The debate intensified
    
  • His dislike for raw fish only deepened in Japan
    

• make more intense, stronger, or more marked
  • The efforts were intensified, Her rudeness intensified his dislike for her
    
  • Pot smokers claim it heightens their awareness
    
  • This event only deepened my convictions
    

Related words

• Synonyms: 
  change , intensify , compound , heighten