Usage: 4 forms in 10 verses
Form Translated As     In Verse(s)
ανανεύων in shaking LXX.Exod.22.17
in shaking his head in dissent LXX.Num.30.5LXX.Num.30.8
ανανεύση he shakes his head in dissent LXX.Exod.22.17
shake his head in dissent LXX.Num.30.11
should dissent LXX.Num.30.5LXX.Num.30.8
ανένευσεν shook his head in dissent LXX.Num.30.5LXX.Num.30.8
ανένευσαν they shook their heads in dissent LXX.Neh.9.17

Liddell-Scott-Jones

ἀνανεύω (ananeuō) to disagree G:V

ἀνανεύω-νεύω,

future -νεύσομαι[Refs 5th c.BC+] -νεύσω [Refs 2nd c.AD+]aorist ἀνένευσα, etc.:—throw the head back in token of denial, make signs of refusal, opposed to κατανεύω, ἐπινεύω, ὡς ἔφατ᾽ εὐχομένη, ἀνένευε δὲ Παλλὰς Ἀθήνη[Refs 8th c.BC+]

__2 with accusative of things, deny, refuse, ἕτερον μὲν ἔδωκε πατήρ, ἕτερον δ᾽ ἀνένευσε[Refs 8th c.BC+]: with future infinitive, σόον δ᾽ ἀνένευσε μάχης ἒξ ἀπονέεσθαι[Refs]:—passive, ἀνανεύωνενευμένη rejected, [Refs 1st c.AD+]
__3 later, with genitive of things, look up from, [Refs 4th c.AD+]; go back from, ἀπὸ τοῦ ψεύδους[Refs 2nd c.AD+]
__II generally, throw the head up: hence ἀνανεύωνενευκώς upright, [τὰς σαρίσας] . φέρουσι[Refs 2nd c.BC+]. Astron., tilt back, of the pole, opposed to κατανεύω, [Refs 4th c.BC+]