アラクノフォビアMeanings1nounarachnophobiapsychiatryMedical/psychiatric term for an irrational fear of spiders. In everyday Japanese, クモ恐怖症 is also used.See also: クモ恐怖症彼かの女じょはアラクノフォビアで、クモの写しゃ真しんも見みられない。She has arachnophobia and can't even look at pictures of spiders.