gloppen

from The Collaborative International Dictionary of English v.0.48

Gloppen \Glop"pen\ (gl[o^]p"pen), v. t. & i. [OE. glopnen to be
   frightened, frighten: cf. Icel. gl[=u]pna to look downcast.]
   To surprise or astonish; to be startled or astonished. [Prov.
   Eng.] --Halliwell.
   [1913 Webster]