S: (v) intensify (intensify%2:30:00::), deepen (deepen%2:30:00::) (become more intense) "The debate intensified"; "His dislike for raw fish only deepened in Japan"
S: (v) deepen (deepen%2:30:03::) (make deeper) "They deepened the lake so that bigger pleasure boats could use it"
S: (v) deepen (deepen%2:30:02::), change (change%2:30:08::) (become deeper in tone) "His voice began to change when he was 12 years old"; "Her voice deepened when she whispered the password"