What is another word for let fly?
Pronunciation: [lˈɛt flˈa͡ɪ] (IPA) 
When you hear someone say "let fly," they are likely talking about releasing something quickly or impulsively. But there are plenty of other expressions that convey a similar meaning. You could say "let loose," "unleash," or "fire off" to convey the sense of a sudden burst of activity. Alternatively, you might use the phrase "set free," indicating the release of something from confinement or restriction. Other options include "give vent to," "throw caution to the wind," or "spill your guts," all of which suggest a sense of abandoning restraint and pursuing action without reservation. No matter which synonym you choose, they all comprise the act of releasing something with force and energy.
