trĕpĭdĭārĭus — Lewis & Short
trĕpĭdĭārĭus, a, um, adj.trepidus,
I restless, moving briskly:
sed ipsos equos, quos vulgo trepidiarios, militari verbo tottonarios vocant, ita edomant, etc.,Veg. 1, 56, 37.