cut (someone or something) short
1. To interrupt someone so that they stop talking. I was sick of listening to her story so I finally cut her short.
2. To end something unexpectedly or abruptly before its planned conclusion. No one was disappointed when the principal's microphone came unplugged, cutting his speech short.
cut short
Abbreviate, stop abruptly, as in The thunderstorm cut short our picnic, or She cut her short, saying she'd already heard the story of their breakup. Shakespeare used this term to mean "put a sudden end to someone's life": "Rather than bloody war shall cut them short" ( 2 Henry VI, 4:4), a less common usage today. The broader usage dates from the mid-1600s.
cut short
To stop before the end; abbreviate.