- Foolishness
- Silliness
- Silly remark
- Stupidity
- Vacuousness
- Inanition; void space; vacuity; emptiness.
- Want of seriousness; aimlessness; frivolity.
- Buffoonery
- Extreme foolishness
- Extreme stupidity
- Extremely stupid behaviour
- Folly
- Foolishness
- Foolishness shown in extremes of idiomatic inaccuracy