/ ˈnɔɪzi; NAmE / adjective ( nois·ier , noisi·est )
1.
making a lot of noise :
noisy children / traffic / crowds
a noisy protest (= when people shout)
The engine is very noisy at high speed.
2.
full of noise :
a noisy classroom
► nois·ily / -ɪli; NAmE / adverb :
The children were playing noisily upstairs.