The word rumpus is of Georgian era origin, first used in writing in 1745 and popularised during the 1760s.

It refers to an uproar or noisy disturbance, which could range from something boisterous to something riotous.

Examples:

“The children made a rumpus coming down the stairs.”

“I heard a rumpus in the garden, then realized the siblings were arguing.”

The earlier usage of the word was a little more negative, referring to fights, violence, disturbances, etc. but as we move into the 19th century, the usage became more lighthearted and playful, such as referring to a noisy commotion, children playing in the nursery, a lively party, etc.

For our modern usage, we merrily use it for both meanings, from describing overhearing a quarrel to commenting on playroom laughter.