1. A ludicrous folly
   - absurdity, fatuity, fatuousness 
2. An impulsive scatterbrained manner
   - giddiness

Derived forms: sillinesses

See also: silly

Type of: folly, foolishness, frivolity, frivolousness, unwiseness

Encyclopedia: Silliness

• Mithracin
• mithraic
• Mithraicism
• Mithraism
• Mithraist
• mithraistic
• mithramycin
• Mithras
• mithridate
• mithridate mustard
• Mithridates
• Mithridates the Great
• Mithridates VI
• mitigable
• mitigate
• mitigated
• mitigating circumstance
• mitigation
• mitigative
• mitigator
• mitigatory
• mitochondrial
• mitochondrion
• mitogen
• mitomycin