thievish
From LSJ
κακῷ δέ τῳ προσεικάζω τάδε → I think this looks like mischief, these things sound ominous to me, these things sound evil to me, I consider these things ominous, I liken these things to something bad
English > Greek (Woodhouse)
adj.
P. and V. κλωπικός (Plat., Eur., Rhes.).
Have a thievish look: Ar. κλέπτον βλέπειν ( Vesp. 900).