DARKENING Synonyms: 242 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/darkening
WEBSynonyms for DARKENING: dark, bleak, somber, depressing, depressive, lonely, desolate, gray; Antonyms of DARKENING: bright, friendly, cheerful, comforting, festive, cheery, gay, sunshiny.
DA: 46 PA: 20 MOZ Rank: 6