Dictionary entry

ἐκτενῶς

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

ἐκτενῶς

adv.,

[in LXX: Jh.3.8 (חׇזְקָה), Jl 1:14, Jth 4:12, III Mac 5:9 *;]

fervently, earnestly: Ac 12:5, I Pe 1:22; compar., Lk 22:44 (WH br., R, mg., omits).†