Wiktionary
squirrelly
a. 1 resembling a squirrel 2 unpredictable or jumpy 3 eccentric
Usage examples of "squirrelly".
As she coasted up the on ramp to the parkway, she reached the part in her narrative where Barth had gotten squirrelly and sped away from the Clinton pullout.
Right on the hundred-fathom curve, and water conditions are a little squirrelly there, what with the Gulf Stream coming in so close and fresh water coming out of the fiords.
He would accelerate for as long as he felt in control, and at the first sign the bike was getting squirrelly, Rayford would ride the brake.