To make more poignant or affecting; to increase in degree
To make deep or deeper
To make more sound or heavy.
To become lower in tone
To make darker or more intense; to darken
To become deeper
To become more intimate.
To make lower in tone
To become darker or more intense
To become more thorough or extensive.
To make more thorough or extensive.
To become more sound or heavy.
To make more intimate.
To make (someone) increasingly aware of, in a concerned or sensitive way.
To render capable of being acted on by actinic rays of light.
To make (someone or something) sensitive or responsive to certain stimuli.