Lexical Definition

‎ἐπιχειρέω‎ epicheiréō (ep-ee-khi-reh'-o) to attempt G:V
from ‎ἐπί‎ and ‎χείρ‎

go about, take in hand (upon).

Usage: 5 forms in 6 verses
Form Translated As     In Verse(s)
ἐπεχείρουν they were seeking Acts.9.29
ἐπεχείρησαν Attempted Acts.19.13
undertook Luke.1.1
επιχειρούσιν make an attempt LXX.2Chr.20.11
επιχειρήση make an attempt LXX.Ezra.7.23
επεχείρησεν he attempted LXX.Esth.9.25

Abbott-Smith

ἐπιχειρέω, -ῶ (< χεῖρ), [in LXX for חָשַׁב, Ex 9:25; גָּמַל, II Ch 20:11, al. ;]
1. to pat one's hand to.
2. to take in hand, attempt: c. inf., Lk 1:1, Ac 9:29 19:13.†

Abbott-Smith References

Book Refs
Exodus 9:25
2 Chronicles 20:11
Luke 1:1
Acts 9:29 · 19:13

Liddell-Scott-Jones

ἐπιχειρέω-έω,

(χείρ) put one's hand to, οἱ μὲν δείπνῳ ἐπεχείρεον [Refs 8th c.BC+]

__2 put one's hand to a work, set to work at, attempt, τῇ διώρυχι [Refs 5th c.BC+]; δρησμῷ . attempt an escape, [Refs 5th c.BC+]; λόγοις, τέχνῃ, [Refs 5th c.BC+]
__3 less frequently with accusative, μεγάλα ἔργα [Refs 6th c.BC+]:—passive, to be attempted, [ἐπιχειρέωούμενον ">Refs 5th c.BC+]the thing attempted, [Refs 5th c.BC+]
__4 with infinitive, endeavour, attempt to do, [Refs 5th c.BC+]: with future infinitive, [Refs 1st c.AD+]:—passive, τὸ πρῶτον ἐπεχειρήθη πραχθῆναι [Refs 5th c.BC+]
__5 ἐπειχειρήθη with dative, an operation was performed, τῇσιν αἱμορροΐσι [Refs 5th c.BC+]
__II make an attempt on, attack, τινι [Refs 5th c.BC+]; κτείνων ἐπιχειρέωῶν Legal cited in [Refs 5th c.BC+]:—passive, [Refs 5th c.BC+]
__II.b obscene meaning, . μειρακίοις [Refs 4th c.AD+]
__III attempt to prove, argue dialectically, [Refs 5th c.BC+]; ἔκ τινος from a topic,[ἐπιχειρέωεῖν ὧδε [prev. author] “Cael.” 275b12. ">Refs 4th c.BC+]