Where does “у́мничать” come from?
у́мничать (Russian) comes from Russian умник, from Russian уме́ть, from Old East Slavic оумѣти, from Proto-Slavic uměti, from Proto-Slavic umъ, from Proto-Indo-European h₂ew-m-, from Proto-Indo-European h₂ew- — to enjoy; to consume; to perceive, see, to be...
у́мничать (Russian): to act smart, to be a smartarse/smartass
Definitions
- to act smart, to be a smartarse/smartass