What is the meaning of 'raucous'?

The term 'raucous' refers to a sound that is loud, harsh, and often disorderly. It typically describes noises that are disruptive or jarring, like rowdy laughter, shouts, or the clamor of a lively party. The connotation of the word is negative, suggesting an overwhelming or harsh auditory experience that can be obnoxious or unpleasant.

When considering the other options, 'soft and gentle' and 'melodious and soothing' convey qualities associated with pleasant sounds, which directly contrasts with the meaning of 'raucous.' Similarly, 'calm and quiet' indicates a lack of noise altogether, which also does not align with the loudness implied by 'raucous.' Therefore, 'unpleasantly loud and harsh' accurately captures the essence of the word, making it the correct choice.