G2520
καθήκω
be fit
καθ-ήκω [in LXX: impers., Lev.5:16, Eze.21:27 (32), al. (מִשְׁפָּט); τὰ κ., Exo.5:13, al. (דָבַר), etc. ;] __1. to come down, come to. __2. to be fit, proper: impers., with accusative and inf., Act.22:22 (on the tense, see Bl., § 63, 4); τὰ μὴ καθήκοντα, Rom.1:28.† (AS)
The KJV translates G2520 in the following manner:
are (2x), convenient (2x), fit (2x), is (2x)
Full Thayer's lexicon entry
καθήκω — kathḗkō
καθήκω; (from Aeschylus, Sophocles down);
1. to come down.
2. to come to, reach to; impersonally, καθήκει, it is becoming, it is fit (cf. German zukommen), Eze 21:27; οὐ καθῆκεν (Rev. καθῆκον), followed by the accusative with an infinitive, Act 22:22 (Winers Grammar, 282 (265); Buttmann, 217 (187)); τά μή καθήκοντα, things not fitting, i. e. forbidden, shameful, Rom 1:28; 2Ma 6:4. Cf. ἀνήκω.
2 occurrences
Acts (1), Romans (1)