Perhaps from a (as a negative particle) and the middle voice of rheo; to contradict, i.e. Disavow, reject, abnegate -- deny, refuse.
see GREEK a
see GREEK rheo
ἀρνεῖσθαι (arneisthai) − 1 Occurrence
ἀρνησάμενοι (arnēsamenoi) − 1 Occurrence
ἀρνησάμενός (arnēsamenos) − 1 Occurrence
ἀρνήσασθαι (arnēsasthai) − 1 Occurrence
ἀρνησάσθω (arnēsasthō) − 1 Occurrence
ἀρνήσεται (arnēsetai) − 1 Occurrence
ἀρνήσῃ (arnēsē) − 1 Occurrence
ἀρνήσηταί (arnēsētai) − 1 Occurrence
ἀρνήσομαι (arnēsomai) − 1 Occurrence
ἀρνούμενοι (arnoumenoi) − 2 Occurrences
ἀρνούμενος (arnoumenos) − 3 Occurrences
ἀρνουμένων (arnoumenōn) − 1 Occurrence
ἀρνοῦνται (arnountai) − 1 Occurrence
ἠρνεῖτο (ērneito) − 1 Occurrence
ἠρνημένοι (ērnēmenoi) − 1 Occurrence
ἠρνήσαντο (ērnēsanto) − 1 Occurrence
ἠρνήσασθε (ērnēsasthe) − 2 Occurrences
ἠρνήσατο (ērnēsato) − 8 Occurrences
ἠρνήσω (ērnēsō) − 2 Occurrences
ἤρνηται (ērnētai) − 1 Occurrence