Origin: bef. 900; ME; OE
hlūd; c. OFris, OS
hlūd (D
luid), OHG
hlūt (G
laut); akin to Gk
klytós famous
Related forms: loudly, adverb
loudness, noun
Synonyms:
1. resounding; deafening; stentorian. Loud, noisy describe a strongly audible sound or sounds. Loud means characterized by a full, powerful sound or sounds, which make a strong impression on the organs of hearing: a loud voice, laugh, report. Noisy refers to a series of sounds, and suggests clamor and discordance, or persistence in making loud sounds that are disturbing and annoying: a noisy crowd. 5. gaudy, flashy, showy.
Antonyms:
1. quiet.
[loud] 
adjective, -er, -est, adverb