[adjective] -ier, -iest - (of a person or their appearance) seeming dishonestI wouldn't trust anyone with such shifty eyes/who was so shifty-eyed.You're looking very shifty. What have you been up to?There were a couple of shifty-looking people standing on the corner of the street.
SHIFTY
Meaning of SHIFTY in English
Cambridge English vocab. Кембриджский английский словарь. 2012