Proto-IE: *kēt- (-th-)
Meaning: to commend, to scold
Old Indian: katthate `to boast, praise, flatter; abuse, revile'; kātkr̥ta- `insulted, dishonoured'
Old Greek: kōtílo- `schwätzend', kōtíllō `schwätze'
Russ. meaning: хвалить, ругать
References: WP I 384 (differently in Pok.)