Lexical Definition

‎τάχος‎ táchos (takh'-os) speed G:N-N
from the same as ‎ταχύς‎

+ quickly, + shortly, + speedily.

Usage: 4 forms in 32 verses
Form Translated As     In Verse(s)
ταχέωσ Quickly LXX.2Chr.18.8
τάχουσ quickly LXX.Ps.6.10LXX.Ps.147.15
τάχοσ Let him quickly LXX.Isa.5.19
quickly LXX.Exod.32.7LXX.Num.16.46LXX.Deut.7.4LXX.Deut.7.22LXX.Deut.9.12LXX.Josh.10.6LXX.Josh.23.16LXX.Judg.2.23LXX.Judg.9.54LXX.1Kgs.22.9
τάχει quickly LXX.Deut.9.3LXX.Deut.11.17LXX.Deut.28.20LXX.Josh.8.18LXX.Josh.8.19LXX.1Sam.23.22LXX.1Chr.12.8LXX.Ps.2.12LXX.Ezek.29.5
speed Luke.18.8Acts.12.7Acts.22.18Acts.25.4Rom.16.201Tim.3.14Rev.1.1Rev.2.5Rev.22.6

Abbott-Smith

τάχος, -ους, τό [in LXX chiefly for parts and derivatives of מָהַר ;]
swiftness, speed. Adverbially, ἐν τ. (= ταχέως), quickly, speedily, soon: Lk 18:8, Ac 12:7 22:18 25:4, Ro 16:20, I Ti 3:14, Re 1:1 22:6.†

Abbott-Smith References

Book Refs
Luke 18:8
Acts 12:7 · 22:18 · 25:4
Romans 16:20
1 Timothy 3:14
Revelation 1:1 · 22:6

Liddell-Scott-Jones

τάχος [], εος, τό,

(ταχύς) swiftness, speed, ἵπποισι.., οἷσιν Ἀθήνη νῦν ὤρεξε τ. [Refs 8th c.BC+]: plural, velocities, [Refs 5th c.BC+]

__2 τ. φρενῶν quickness of temper, hastiness, [Refs 5th c.BC+]; falsa lectio in [Refs 5th c.BC+]; τ. τῆς ψυχῆς quickness of apprehension, [Refs]
__II τάχος is frequently used in Adverbial phrases for ταχέως, absolutely in accusative, [Refs 5th c.BC+]; also in dative, τάχει ὁμοίως with like velocities, [Refs 5th c.BC+]; εἰς τάχος [τάχος 5th c.BC: Herodotus Historicus 1.124, 152, 5th c.BC: Thucydides Historicus 1.73 ">Refs 5th c.BC+]; κατὰ τὸ τ. [Refs 3rd c.BC+]; μετὰ τάχους [Refs 5th c.BC+]; μετὰ παντὸς τ. with all speed, [Refs 3rd c.AD+]; σὺν τάχει [τάχος,">Refs 5th c.BC+] ={ὡς τάχιστα}, [τάχος 5th c.BC: Herodotus Historicus 9.7.β, 5th c.BC: Thucydides Historicus 7.42, “PCair.Zen.” 60.8 (3rd c.BC)">Refs 5th c.BC+]; ὅσον τάχος [Refs 5th c.BC+]; (Doric dialect ) τάχος [Refs 5th c.BC+]