The story
From obsolete meaning of bug (“something terrifying”) + bear. See Middle English bugge, modern bogey.
First known use, by meaning
- from late 16th c. A source of dread; resentment; or irritation.
Etymology from Wiktionary, CC BY-SA 4.0.
bugbear
Today it means: An ongoing problem; a recurring obstacle or adversity. Full definition →
First used late 16th c.