Extended Strong's Greek Lexicon (Abbott-Smith based)
be fit
Usage: 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)