I've only heard secondhand about A Clockwork Orange, but for some reason I recall "droog" having a similar meaning in that book's argot. Does that draw on the word друг? (I won't say it's specifically inspired by Ukrainian, though--when I looked the word up on Forvo (the first time I've ever done that) I actually ended up on a Russian listing)
There is a glitch in this one too. Duolingo, please redo your entire Ukrainian lesson. You have tons of errors in it that marks the answer as incorrect even though it is written the exact same way you stated.