Verb deepen has 4 senses
  1. intensify, compound, heighten, deepen - make more intense, stronger, or more marked; "The efforts were intensified", "Her rudeness intensified his dislike for her"; "Potsmokers claim it heightens their awareness"; "This event only deepened my convictions"
    --1 is one way to increase
    Sample sentences:
    Somebody ----s something
    Something ----s something
  2. intensify, deepen - become more intense; "The debate intensified"; "His dislike for raw fish only deepened in Japan"
    --2 is one way to increase
    Sample sentence:
    Something ----s
  3. deepen - make deeper; "They deepened the lake so that bigger pleasure boats could use it"
    --3 is one way to
    enlarge
    Derived form: noun deepening1
    Sample sentences:
    Somebody ----s something
    Something ----s something
  4. deepen, change - become deeper in tone; "His voice began to change when he was 12 years old"; "Her voice deepened when she whispered the password"
    --4 is one way to change
    Sample sentence:
    Something ----s
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