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Noun: silly billy
Usage: Brit
  1. A stupid foolish person
    - nincompoop, poop, ninny, plonker [Brit], ning-nong [Austral, NZ], nong [Austral, NZ]

Derived forms: silly billies

Type of: simple, simpleton

Nearest

sill
sillabub
Sillaginidae
Sillago
sillcock
sillily
silliness
sillock
Sills
silly
silly billy
silly season
silo
siloxane
Silphium
Silphium laciniatum
silt
silt up
siltstone
silty
Silurian