shoot off
From Longman Dictionary of Contemporary Englishshoot off phrasal verb British English informalLEAVE A PLACEto leave somewhere quickly or suddenly Sorry, but I’ll have to shoot off before the end of the meeting. → shoot→ See Verb tableExamples from the Corpusshoot off• Arthur shot off before anyone could say anything.• I've really got to shoot off - I said I'd be home ten minutes ago.