1. [verb] To make deep or deeper
2. [verb] To make darker or more intense; to darken
3. [verb] To make more poignant or affecting; to increase in degree
4. [verb] To make lower in tone
5. [verb] To make more thorough or extensive.
6. [verb] To make more intimate.
7. [verb] To make more sound or heavy.
8. [verb] (intransitive) To become deeper
9. [verb] (intransitive) To become darker or more intense
10. [verb] (intransitive) To become lower in tone
11. [verb] (intransitive) To become more thorough or extensive.
12. [verb] (intransitive) To become more intimate.
13. [verb] (intransitive) To become more sound or heavy.
14. [verb] 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'.
15. [verb] Become more intense; 'The debate intensified'; 'His dislike for raw fish only deepened in Japan'.
16. [verb] Make deeper; 'They deepened the lake so that bigger pleasure boats could use it'.
17. [verb] Become deeper in tone; 'His voice began to change when he was 12 years old'; 'Her voice deepened when she whispered the password'.
