obstreperous — ODE

obstreperous /əbˈstrɛp(ə)rəs

▸ adjective noisy and difficult to control:

the boy is cocky and obstreperous.

– DERIVATIVES

obstreperously /əbˈstrɛp(ə)rəsli

/ adverb

obstreperousness /əbˈstrɛp(ə)rəsnəs

/ noun

– ORIGIN late 16th century (in the sense ‘clamorous, vociferous’): from Latin obstreperus (from obstrepere, from ob- ‘against’ + strepere ‘make a noise’) + -ous.