One thing frightful as a specter something imaginary that creates unnecessary fright one thing used to stimulate needless fear additionally some thing truly dangerous or an imaginary monster familiar with frighten children etc
- an imaginary beast regularly frighten children
- a source of issue
- Alt. of Bugbear
1843, earlier in the day buggybow (1740), probably a modification of bugbear (also see bug (n.)), but linked by Chapman ["Dictionary of United states Slang"] with Bugibu, demon in the Old French poem "Aliscans" from 1141, that will be maybe of Celtic source (compare Cornish bucca-boo, from bucca "bogle, goblin").
(letter.) Alt. of Bugbear