bogy
UK[ˈbəʊɡi]US[ˈboʊɡi]
n
An evil or mischievous spirit; a hobgoblin.
n
A source of fear, perplexity, or harassment.
Etymology
The word 'bogy' emerged in the 19th century as a variant of 'bogey', a term for a hobgoblin or specter. Its ultimate origin is uncertain but is commonly linked to the Middle English 'bugge', meaning a frightening specter, which is also the source of 'bugbear'. This term likely has connections to the Welsh 'bwg' (ghost) and possibly the obsolete German 'bogge' (goblin). The semantic journey is from a specific, often personified, evil spirit to a more generalized metaphor for any persistent source of fear or annoyance, such as an imaginary enemy or a difficult problem.
Analysis
The word 'bogy' is a simplex form. It is a variant spelling of 'bogey' and 'bogie', which entered English as a proper name for the Devil or an evil spirit, likely from a Germanic root.
Examples
The child was convinced a bogy lived in the dark closet.
Inflation has become the bogy of the current administration.
He used the threat of a rival company as a bogy to motivate his sales team.