deepen
Pronunciation:
/ˈdiːpən/verb
Definitions
To make deep or deeper
Example: They deepened the well by 200 feet.
To make darker or more intense; to darken
Example: The event deepened the prevailing gloom.
To make more poignant or affecting; to increase in degree
Example: News of her death deepened my sorrow.
To make lower in tone
Example: The tuner deepened the tone of the organ.