게 끊다

cut it short, break it off

끊다 is cutting something off, and these lines show its range: cutting a phone call short (안부 전화는 짧게 끊기가 미안하잖아요, it feels rude to keep a check-in call brief), quitting a habit (어떻게 끊으셨는지, how did you quit), breaking a performance into pieces (무대가 이렇게 끊어서 가요?), and killing off an expectation. -게 supplies the manner: 확실하게, 짧게, 간단하게.

Register: casual