A little kid expected to sit through a three-hour church service who gets bored and starts wiggling around is an example of a kid who would be described as fidgety.
- Tending to fidget.
- Creating unnecessary fuss.
(comparative fidgetier, superlative fidgetiest)
- Having, or pertaining to, a tendency to fidget.
- Her mother hated taking her on the plane because she would become fidgety and bother her neighbours.