squirrelly

adjective4

1. •
   Resembling a squirrel.
2. •
   (figurative) Eccentric.

   • Mom can act a bit squirrelly sometimes, and I swear it's usually worse after sunset.
3. •
   (figurative) Unpredictable or jumpy.

   • "This aircraft seems to be acting a bit squirrelly," the pilot complained uneasily to his copilot.
4. •
   Literally so.

   • Some of these lemurs seem almost squirrelly.