Definitions from Wiktionary (deepen)

▸ verb:  (transitive) To make deep or deeper
▸ verb:  (transitive) To make darker or more intense; to darken
▸ verb:  (transitive) To make more poignant or affecting; to increase in degree
▸ verb:  (transitive) To make lower in tone
▸ verb:  (transitive) To make more thorough or extensive.
▸ verb:  (transitive) To make more intimate.
▸ verb:  (transitive) To make more sound or heavy.
▸ verb:  (intransitive) To become deeper
▸ verb:  (intransitive) To become darker or more intense
▸ verb:  (intransitive) To become lower in tone
▸ verb:  (intransitive) To become more thorough or extensive.
▸ verb:  (intransitive) To become more intimate.
▸ verb:  (intransitive) To become more sound or heavy.
▸ Also see deepen

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