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US /ˌsɪliˈbɪli/ UK /ˌsɪliˈbɪli/
Freq #101847

Meanings

  1. 1
  2. 2

Thesaurus

1 noun · informal, especially... silly goosefoolclowngoof
2 adj · informal: charmingly,... goofyfoolishplayfully silly
Opposites
sensible person

A rhyming phrase formed from silly + Billy, the familiar form of William, and often associated with the nickname "Silly Billy" for William IV. It became a mild, frequently affectionate label for a foolish person; the lowercase adjective developed from the noun phrase.

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