Bugbear
any source, real or imaginary, of needless fright or fear.
a persistent problem or source of annoyance.
Folklore. a goblin that eats up naughty children.
Historical Examples
    Adventures of Bindle Herbert George Jenkins
    In School and Out Oliver Optic
    Second String Anthony Hope
    It Happened in Egypt C. N. Williamson
    The Abiding Presence of the Holy Ghost in the Soul Bede Jarrett
    Patchwork Anna Balmer Myers
    Ancient Pagan and Modern Christian Symbolism Thomas Inman
    The Psychology of Nations G.E. Partridge
    Aaron’s Rod D. H. Lawrence
    The Atlantic Monthly, Volume 17, No. 102, April, 1866 Various
noun
a thing that causes obsessive fear or anxiety
(in English folklore) a goblin said to eat naughty children and thought to be in the form of a bear
n.
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