noun
ninny
NIN-ee/ˈnɪni/
A foolish or silly person.
The person acts like a ninny, watering the umbrella instead of the dry soil.

Etymology
Ninny may be connected with innocent or the name Innocent. If so, the link is through an innocent as an artless or simple person, with simplicity becoming foolishness.
In context
such a Visionary and supersensual Ninny as you are
More examples
- Don't be a ninny; ask for help if you need it.
- We look like ninnies standing outside the wrong restaurant.
- He calls himself a ninny for misreading the schedule.
Forms
ninny · ninnies
Similar words
- fool
- A broader term, often harsher and less playful.
- simpleton
- Suggests a general lack of intelligence rather than momentary silliness.