PIE base ‘to sieve, discriminate, distinguish’.
Other derivatives include discriminate, decree, discrete, secret, and concern, from Latin cernere ‘to separate’ and hypocrisy and criterion, from Greek krīnein ‘to separate, decide, judge’.
[Pokorny *(s)ker-4 ‘to cut’, Section II, i-basis skerī̆-, skrē̆i-, skrī̆- ‘cut, clip, divide’, pp. 938–947 (945).]