λαθροδήκτης

λαθροδήκτης -ου [λάθρᾳ, δάκνω] adj. that bites on the sly, treacherously, of a dog (fig. referring to pers.) Ign. Eph. 7.1 etc.

● also -δάκτης Pall. Io. 6.76.