Synonyms for Rat-a-tat-tat:

n.

clink, beep, report, explosion, creak, clap, click, bang, creaking, pop, bleep, sounds, snap, plop, peep, bark. rat-a-tat-tat (noun)
rat-tat, rat-a-tat.

Other synonyms:

clap, bang. explosion. bark. report. Other relevant words:
clink, beep, report, explosion, creak, clap, click, bang, creaking, pop, bleep, sounds, snap, plop, peep, bark.