Following are some pictures that I think characterize the word loud.

Alarm Clock going off A couple arguing Illustrated blue bird singing Person with bullhorn Illustration of crowd at concert with a blue background Illustration of crowd at concert with a yellow background View of persons mouth through a cone Woman with her fingers in her ears
Guy playing the guitar Older gentlemen enjoying music from his boom box Woman pulling her hair Illustration of instruments and musical notes Guy wearing rock n roll wig Stereo speakers Stereo speakers vibrating Guy with headphones that are too loud