κεντέω τὸν πῶλον περὶ τὴν νύσσαν → of impetuous haste, goad the foal around the turning post
P. and V. ἀκίνητος, βέβαιος, ἀσφαλής.
firm: P. and V. καρτερός, V. ἔμπεδος; see firm.
not to be influenced: P. and V. ἀκίνητος, P. ἀπαραίτητος, Ar. and V. ἄτεγκτος, V. δυσπαραίτητος.
obstinate: P. and V. αὐθάδης.