Predatory is a synonym of thievish.
As adjectives the difference between predatory and thievish
is that predatory
is of, or relating to a predator while thievish
is having a tendency to steal.
Of, or relating to a predator.
Living by preying on other living animals.
(figuratively) Exploiting or victimizing others for personal gain.
* predatory pricing
Having a tendency to steal
Having the manner of a thief; furtive