Words at Play : 22 Charming Words for Nasty People
Definition:
a credulous person; especially : one who believes everything he or she hears
Examples:
"The Gobemouche abounds in clubs, coffee-houses, Capel Courts, Bellamy's, and all old women's tea-parties." Punch, or the London Charivari, 1857
Gobemouche is evidence that certain unpleasant things, when cloaked in the veneer of French, can sound rather pleasant.
About the Word:
The word rolls off the tongue easily, and sounds quite lovely; however, if we look at the etymology it more or less translates to "fly gulper" (from the French gober, meaning "to swallow whole", and mouche, meaning "fly").