Home › Words › A › achluophobiaachluophobiaachluophobia means the fear of darkness.EtymologyFrom Ancient Greek ἀχλύς (akhlús, “darkness”) and -phobia.nounThe fear of darkness.e.g.“If you have a severe case of achluophobia (fear of the dark), for instance, you may want to wait at the mouth of the cave.” — 2007, Dave Smith, Backcountry Bear Basics: The Definitive Guide to Avoiding Unpleasant Encounters, The Mountaineers Books, →ISBN:Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.achluophobic 80% match — Of or relating to achluophobia (a morbid fear of darkness or nightfall). vs achluophobia →nyctophobia 75% match — A fear of the night, nighttime, or darkness. vs achluophobia →nyctophobe 71% match — Someone who is afraid of the night or darkness. vs achluophobia →nyctophobic 70% match — Afflicted with nyctophobia; fearful of the dark or of night. vs achluophobia →nyctohylophobia 67% match — The fear of dark forests or wooded areas. vs achluophobia →auroraphobia 64% match — Fear of the northern lights. vs achluophobia →eosophobia 64% match — A morbid fear of dawn or daylight. vs achluophobia →noctophobia 61% match — Synonym of nyctophobia. vs achluophobia →