G1619
ἐκτενῶς
fervently
ἐκτενῶς adv., [in LXX: Jon.3.8 (חׇזְקָה), Jol.1:14, Jdth.4:12, 3Ma.5:9 * ;] fervently, earnestly: Act.12:5, 1Pe.1:22; compar., Luk.22:44 (WH br., R, mg., omits).† (AS)
The KJV translates G1619 in the following manner:
fervently (2x)
Full Thayer's lexicon entry
ἐκτενῶς — ektenōs
ἐκτενῶς, adverb, earnestly, fervently: Act 12:5 L T Tr WH; ἀγαπᾶν, 1Pe 1:22. (Jon 3:8; Joe 1:14; 3Ma 5:9. Polybius etc. Cf. Lob. ad Phryn., p. 311; (Winer's Grammar, 25; 463 (431)).)
2 occurrences
Acts (1), I Peter (1)