noisy /ˈnɔɪzi/ adjective4 •Making a noise, especially a loud unpleasant soundthe noisy crowd. •Full of noise.This market is the noisiest and swarmiest centre of noisy and swarming Florence, and I always like to pass through it on that account. — 1871 •Accompanied by or introducing random fluctuations that obscure the real signal or data •Unpleasant-looking and causing unwanted attentionnoisy clothes formsnoisier · noisiest