1. (noun) a ludicrous folly

• absurdity
• fatuity
• fatuousness

2. (noun) an impulsive scatterbrained manner

• giddiness

1. (noun) a ludicrous folly

• folly
• foolishness
• unwiseness

2. (noun) an impulsive scatterbrained manner

• frivolity
• frivolousness

1. (noun) an impulsive scatterbrained manner

• lightness
• lightsomeness

1. (noun) a ludicrous folly

• absurd
• cockeyed
• derisory
• idiotic
• laughable
• ludicrous
• nonsensical
• preposterous
• ridiculous
• asinine
• asinine
• fatuous
• fatuous
• inane
• inane
• mindless
• mindless
• vacuous
• vacuous
• cockamamie
• cockamamy
• goofy
• sappy
• silly
• wacky
• whacky
• zany
• pathetic
• ridiculous
• silly

2. (noun) an impulsive scatterbrained manner

• airheaded
• airheaded
• dizzy
• dizzy
• empty-headed
• empty-headed
• featherbrained
• featherbrained
• giddy
• giddy
• light-headed
• light-headed
• lightheaded
• lightheaded
• silly
• silly