Lexical Definition

‎ἀκριβῶς‎ akribōs (ak-ree-boce') exactly ^G:ADV
adverb from the same as ‎ἀκριβέστατος‎

circumspectly, diligently, perfect(-ly).

• exactly

Abbott-Smith

ἀκριβῶς adv. (< ἀκριβής), [in LXX: De 19:18 (יָטַב), Da TH 7:19 (יְצֵב), Ez 39:14, Wi 19:18, Si 18:29;]
with exactness, carefully: Mt 2:8, Lk 1:3, Ac 18:25, Eph 5:15, I Th 5:2 (M, Th., in l.). Compar., ἀκριβέστερον (Milligan, NTD, 111; MM, VGT, s.v.), Ac 18:26 23:15, 20 24:22.†

Abbott-Smith References

Liddell-Scott-Jones

Included with: ἀκριβῶς-ής, ές,

exact, accurate, precise, [Refs 5th c.BC+]; τριταῖος returning precisely at its time, [Refs]; γαλήνη complete calm, [Refs 4th c.AD+]

__II of persons, precise, strict, δικασταί[Refs 5th c.BC+]; ἀ. τοῖς ὄμμασι sharp- sighted, [Refs 3rd c.BC+]; of arguments, [Refs 5th c.BC+]; τὸ ἀ., ={ἀκρίβεια}, [Refs 5th c.BC+]adverb -βῶς to a nicety, precisely, ἀ. εἰδέναι, ἐπίστασθαι, καθορᾶν, μαθεῖν, etc., [Refs 5th c.BC+]; opposed to ἁπλῶς, [Refs 5th c.BC+]; opposed to τύπῳ (in outline, roughly), [Refs 4th c.BC+]: comparative -έστερον[NT+5th c.BC+]: superlative -έστατα[Refs 5th c.BC+]; ἀ. καὶ μόλις with greatest difficulty, [Refs 1st c.AD+] —also οὐκ εἰς ἀκριβὲς ἦλθες at the right moment, [Refs 5th c.BC+]
__II.2 in the strict sense of the word, ὁ ἀ. ἰατρός[Refs 5th c.BC+]
__II.2.b pure-bred, genuine, Κόλχος[Refs 4th c.AD+]
__II.2.c Astron., true, opposed to φαινόμενος, [Refs 5th c.AD+]
__II.3 parsimonious, stingy, ἀ. τοὺς τρόπους[Refs 4th c.BC+]. adverb -βῶς, διαιτᾶσθαι[Refs 5th c.BC+] —Rare except in _Attic dialect_, mostly Prose. (The sense points to ἄκρος as the first part of the word, but -ῑβης remains uncertain)

_{LSJ Scripture Refs: Acts.18.26}