The onomatopoeic word "rat-tat-tat" is often associated with the sound of rapid and repetitive gunfire. However, there are many synonyms for this expression that can be used in different contexts. Some synonyms for "rat-tat-tat" include "bang-bang," "pop-pop," "crack-crack," and "pew-pew." These words can all be used to describe the sound of gunfire, whether it be from a machine gun, pistol or other firearm. Additionally, the word "rat-tat-tat" can also be used to describe the sound of a rapid percussion instrument, such as a drum. Some synonyms for this use of the word include "rum-tum-tum," "pat-pat," and "tap-tap".