shout 
(shout)
(shout)n.
A loud cry.
tr. & intr.v. shout·ed, shout·ing, shouts
Phrasal Verb: To say with or utter a shout. See Synonyms at yell.
shout down
To overwhelm or silence by shouting loudly.
[Middle English shoute, perhaps from Old Norse skūta, a taunt; see skeud- in the Appendix of Indo-European roots.]
shouter n.