An example of a hullabaloo is the excited sounds and energy of a crowd after a shocking announcement.
Origin of hullabalooechoic reduplicated, reduplication based on hullo
nounpl. hul·la·ba·loos also hul·la·bal·loos
Origin of hullabalooAlteration of obsolete hollo-ballo, probably from holla, hello; see hello.
The Oxford English Dictionary has this as a native English word, first appearing in print in 1762 (Smollett). The OED and other etymologists do not consider the possibility that the word was introduced from India into the English language. The term 'Hullabol' is still used in Indian English to describe a type of public demonstration, involving making a great noise. 'Hulla' is either derived from 'Hamla' meaning 'attack' or from 'halhala' meaning 'ululation' (both words from Persian and then Urdu). 'Bol' is from the Hindi verb 'bolna', 'to utter or say'.