Bang out is a colloquialism used to describe the act of quickly producing or completing something, often with a sense of urgency. Synonyms for this phrase include churn out, hammer out, dash off, pump out, speed-write, whack off, and knock out. These terms all convey a similar idea of completing a task quickly and efficiently, but can also imply a sense of haste or lack of attention to detail. Other related phrases include rattle off, fire off, and race through, which suggest rapid execution of a task or idea. Overall, there are many phrases that can convey the same sense of urgency as "bang out," all of which are useful to have in one's lexicon.