Abbott-Smith Manual Greek Lexicon
ἐκτενῶς (G1619)
3 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).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain