deepening
1. [ noun ] a process of becoming deeper and more profound
Related terms: development deepen
2. [ adjective ] accumulating and becoming more intense
Synonyms: thickening gathering
Examples:

"the deepening gloom" "felt a deepening love" "the gathering darkness" "the thickening dusk"

Related terms: intensifying
Similar spelling:   deafening
  defining
  deponent
  defeminize
  defeminise
  deep-mined