noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A fear of being alone. countable, uncountable
2. 2
   Any phobia relating to a single specific thing, such as spiders or heights. countable, uncountable

Synonyms

All synonyms

hydrophobia

Etymology

From mono- + -phobia.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.