rat-a-tat-tat
UK[ˌræt ə ˈtæt ˈtæt]US[ˌræt̬ ə ˈtæt̬ ˈtæt̬]
n
A series of short, sharp, knocking sounds, especially those made by knocking on a door or by a machine gun.
Etymology
The word 'rat-a-tat-tat' is a classic example of onomatopoeia, formed to mimic the staccato rhythm of repeated knocking or tapping sounds. It first appeared in English in the late 17th century, evolving from earlier forms like 'rat-tat' and 'rat-a-tat', which themselves imitated the sound of a drumbeat or rapping. The extended, repetitive form 'rat-a-tat-tat' intensifies the auditory effect, creating a vivid sonic representation. This process of reduplication, where a base sound ('rat') is repeated and varied, is a common linguistic method for forming words that directly echo the noises they describe, such as 'tick-tock' or 'click-clack'.
Analysis
This is an onomatopoeic reduplication. It is not composed of distinct, separable morphemes with independent meanings but is a rhythmic imitation of a sound.
Examples
The rat-a-tat-tat of the woodpecker echoed through the quiet forest.
He knocked on the old oak door with a loud rat-a-tat-tat.
The sudden rat-a-tat-tat of gunfire shattered the morning calm.