deepen

verb13

1. •
   To make deep or deeper

   • They deepened the well by 200 feet.
2. •
   To make darker or more intense; to darken

   • The event deepened the prevailing gloom.
3. •
   To make more poignant or affecting; to increase in degree

   • News of her death deepened my sorrow.
4. •
   To become darker or more intense

   • The crisis deepened in the following weeks.
5. •
   To become deeper

   • The water deepens as you go toward the middle of the channel.
6. •
   To make more thorough or extensive.

   • The class deepened my understanding of the subject.
7. •
   To become more thorough or extensive.

   • His skill in deciphering the texts deepened with practice.
8. •
   To make more intimate.

   • The shared experiences deepened our relationship.
9. •
   To become more intimate.

   • The conversation deepened and they began to truly share.
10. •
    To make lower in tone

    • The tuner deepened the tone of the organ.
11. •
    To become lower in tone

    • His voice deepened with age.
12. •
    To make more sound or heavy.

    • The hypnotist then proceeded to deepen his trance.
13. •
    To become more sound or heavy.

    • The new bed allowed my sleep to deepen.